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Zheng Y, Hu QQ, Huang Q, Xie Y. Late-Stage C-H Nitration of Unactivated Arenes by Fe(NO 3) 3·9H 2O in Hexafluoroisopropanol. Org Lett 2024; 26:3316-3320. [PMID: 38598253 DOI: 10.1021/acs.orglett.4c01006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
Operationally simple and generally applicable arene nitration with cheap and easily accessible chemicals has been a long-sought transformation in the synthetic organic community. In this work, we realized this goal with nontoxic and inexpensive Fe(NO3)3·9H2O as the nitro source and easily recyclable solvent hexafluoroisopropanol as the promotor via a network of hydrogen-bonding interactions. As a result of the relative mildness and high reliability of this protocol, late-stage nitration of various highly functionalized natural products and commercially available drugs was realized.
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Affiliation(s)
- Yuzhu Zheng
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, People's Republic of China
| | - Qi-Qi Hu
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, People's Republic of China
| | - Qing Huang
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, People's Republic of China
| | - Youwei Xie
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, People's Republic of China
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Zhang Q, Huang ZS, Hu QQ, Qin W, Liang LL, Cui F, Wang Y, Pan F, Liu XL, Tang L, Ma C, Yin ZD, Wang FZ. [Quality of life and risk factors in patients with herpes zoster]. Zhonghua Yi Xue Za Zhi 2022; 102:3395-3400. [PMID: 36372770 DOI: 10.3760/cma.j.cn112137-20220627-01416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To evaluate the quality of life and influencing factors of patients with herpes zoster (HZ) seen in hospitals. Methods: Based on Zoster Brief Pain Inventory (ZBPI) and Five-level EuroQol Five-dimensional Questionnaire (EQ-5D-5L), a cross-sectional survey was conducted to evaluate the pain severity and quality of life of 332 HZ cases seen in 22 hospitals of Lu'an City (Anhui Province), Zibo City (Shandong Province) and Tongchuan City (Shaanxi Province) from October to December 2021. The censored least absolute deviations (CLAD) model was used to analyze the related factors affecting the changes of patients' health utility values. Results: The 45.5% of 332 HZ cases were male. The median (Q1,Q3) age was 59 (50, 68) years. 59.64% of them assessed by ZBPI had moderate to severe pain in the past 24 hours (worst pain score≥5), and that of PHN cases was 84.8%(39/46). 77.7% (258/332), 77.4% (257/332) and 74.1% (246/332) of all patients reported that pain interfered with sleep, mood and general activities, respectively. Aging [β40-49y (95%CI)=-0.11 (-0.15, -0.08); β50-59y (95%CI)=-0.03 (-0.05, 0.00); β60-69y (95%CI)=-0.09 (-0.12, -0.06); β70-90y(95%CI)=-0.16 (-0.19, -0.12)], working status (unemployed) [βfarmer (95%CI)=0.15 (0.13, 0.18); βretirees(95%CI)=0.21 (0.18, 0.24); βemployee (95%CI)=0.13 (0.10, 0.16) ], complications[βPHN (95%CI)=-0.08 (-0.13, -0.04); βother complications (95%CI)=-0.12 (-0.15, -0.08)], within 30 days after onset [β(95%CI)=-0.01 (-0.03, 0.01)] and treatment [βother complications (95%CI)=-0.09 (-0.11, -0.06)] were related factors for the decline of health utility value (all P values <0.05). Conclusions: More than half of the patients with HZ had moderate to severe pain in the past 24 hours, which had a serious negative impact on the physical and mental health of the patients. Elderly patients, acute patients and patients with complications had lower health utility values and worse health status. We suggest that eligible people be vaccinated with HZ vaccine as soon as possible.
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Affiliation(s)
- Q Zhang
- National Immunization Program, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Z S Huang
- Department of Immunization Program, Zibo Municipal Center for Disease Control and Prevention, Zibo 255026, China
| | - Q Q Hu
- National Immunization Program, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - W Qin
- Department of Immunization Program, Lu'an Municipal Center for Disease Control and Prevention, Lu'an 237000, China
| | - L L Liang
- Department of Immunization Program, Tongchuan Municipal Center for Disease Control and Prevention, Tongchuan 727031, China
| | - F Cui
- Zibo Municipal Center for Disease Control and Prevention, Zibo 255026, China
| | - Y Wang
- Department of Immunization Program, Lu'an Municipal Center for Disease Control and Prevention, Lu'an 237000, China
| | - F Pan
- Department of Immunization Program, Lu'an Municipal Center for Disease Control and Prevention, Lu'an 237000, China
| | - X L Liu
- Tongchuan Municipal Center for Disease Control and Prevention, Tongchuan 727031, China
| | - L Tang
- National Immunization Program, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - C Ma
- National Immunization Program, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Z D Yin
- National Immunization Program, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - F Z Wang
- National Immunization Program, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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Hu QQ, Yu XY, Xue XF, Hong XY, Zhang JP, Sun JT. Phylogenetic-Related Divergence in Perceiving Suitable Host Plants among Five Spider Mites Species (Acari: Tetranychidae). Insects 2022; 13:705. [PMID: 36005330 PMCID: PMC9409760 DOI: 10.3390/insects13080705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/01/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
Spider mites belonging to the genus Tetranychus infest many important agricultural crops in both fields and greenhouses worldwide and are diversified in their host plant range. How spider mites perceive their suitable host plants remains not completely clear. Here, through two-host-choice designs (bean vs. tomato, and bean vs. eggplant), we tested the efficacies of the olfactory and gustatory systems of five spider mite species (T. urticae, T. truncatus, T. pueraricola, T. piercei, and T. evansi), which differ in host plant range in sensing their suitable host plant, by Y-tube olfactometer and two-choice disc experiments. We found that spider mites cannot locate their suitable host plants by volatile odours from a long distance, but they can use olfactory sensation in combination with gustatory sensation to select suitable host plants at a short distance. Highly polyphagous species displayed strong sensitivity in sensing suitable host plants rather than the lowered sensitivity we expected. Intriguingly, our principal component analyses (PCAs) showed that the similarity among five spider mite species in the performance of perceiving suitable host plants was highly correlated with their relative phylogenetic relationships, suggesting a close relationship between the chemosensing system and the speciation of spider mites. Our results highlight the necessity of further work on the chemosensing system in relation to host plant range and speciation of spider mites.
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Affiliation(s)
- Qi-Qi Hu
- Department of Entomology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xin-Yue Yu
- Department of Entomology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiao-Feng Xue
- Department of Entomology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiao-Yue Hong
- Department of Entomology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jian-Ping Zhang
- College of Agriculture, Shihezi University, Shihezi 832003, China
| | - Jing-Tao Sun
- Department of Entomology, Nanjing Agricultural University, Nanjing 210095, China
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Hu QQ, Gao YT, Sun JC, Gao JJ, Mu HX, Li YM, Zheng YN, Yang KR, Zhu YP. Iodine-imine Synergistic Promoted Povarov-Type Multicomponent Reaction for the Synthesis of 2,2'-Biquinolines and Their Application to a Copper/Ligand Catalytic System. Org Lett 2021; 23:9000-9005. [PMID: 34748354 DOI: 10.1021/acs.orglett.1c03546] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An efficient iodine-imine synergistic promoted Povarov-type multicomponent reaction was reported for the synthesis of a practical 2,2'-biquinoline scaffold. The tandem annulation has reconciled iodination, Kornblum oxidation, and Povarov aromatization, where the methyl group of the methyl azaarenes represents uniquely reactive input in the Povarov reaction. This method has broad substrate scope and mild conditions. Furthermore, these 2,2'-biquinoline derivatives had been directly used as bidentate ligands in metal-catalyzed reactions.
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Affiliation(s)
- Qi-Qi Hu
- School of Pharmacy, Yantai University, Shandong, Yantai, 264005, P. R. China
| | - Yan-Ting Gao
- School of Pharmacy, Yantai University, Shandong, Yantai, 264005, P. R. China
| | - Jia-Chen Sun
- School of Pharmacy, Yantai University, Shandong, Yantai, 264005, P. R. China
| | - Jing-Jing Gao
- School of Pharmacy, Yantai University, Shandong, Yantai, 264005, P. R. China
| | - Hong-Xiao Mu
- School of Pharmacy, Yantai University, Shandong, Yantai, 264005, P. R. China
| | - Yi-Ming Li
- School of Pharmacy, Yantai University, Shandong, Yantai, 264005, P. R. China
| | - Ya-Nan Zheng
- School of Pharmacy, Yantai University, Shandong, Yantai, 264005, P. R. China
| | - Kai-Rui Yang
- School of Pharmacy, Yantai University, Shandong, Yantai, 264005, P. R. China
| | - Yan-Ping Zhu
- School of Pharmacy, Yantai University, Shandong, Yantai, 264005, P. R. China
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Hu QQ, Shu JQ, Li WM, Wang GZ. Role of Auxin and Nitrate Signaling in the Development of Root System Architecture. Front Plant Sci 2021; 12:690363. [PMID: 34858444 PMCID: PMC8631788 DOI: 10.3389/fpls.2021.690363] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 10/25/2021] [Indexed: 06/12/2023]
Abstract
The plant root is an important storage organ that stores indole-3-acetic acid (IAA) from the apical meristem, as well as nitrogen, which is obtained from the external environment. IAA and nitrogen act as signaling molecules that promote root growth to obtain further resources. Fluctuations in the distribution of nitrogen in the soil environment induce plants to develop a set of strategies that effectively improve nitrogen use efficiency. Auxin integrates the information regarding the nitrate status inside and outside the plant body to reasonably distribute resources and sustainably construct the plant root system. In this review, we focus on the main factors involved in the process of nitrate- and auxin-mediated regulation of root structure to better understand how the root system integrates the internal and external information and how this information is utilized to modify the root system architecture.
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Hu QQ, Qi GW, Ma J, Yang ZR, He XL. [Clinicopathological features of composite pheochromocytoma]. Zhonghua Bing Li Xue Za Zhi 2020; 49:145-148. [PMID: 32074727 DOI: 10.3760/cma.j.issn.0529-5807.2020.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To detect the clinicopathological features, immunophenotype, diagnosis, and differential diagnosis of composite pheochromocytoma(CP). Methods: Five cases of CP were collected at Zhejiang Provincial People's Hospital from January 2011 to January 2019. The clinical, radiological, histologic, immunohistochemical and outcome data were analyzed; the diagnosis and differential diagnosis were discussed. Results: The patients' age range was 52-68 years (mean 59 years, median 54 years), There were 4 males and 1 female, and the male to female ratio was 4∶1. Tumor size was 3-4 cm (mean 3.6 cm, median 3.5 cm). The most common clinical manifestation was adrenal mass. Histologically, the classical feature was two distinct morphologic components, one with tumor cells arranged in irregular nests, and with fine granular and basophilic oramphophilic cytoplasm; the other was composed of scattered ganglion cells in the background of Schwann cells organized in interwoven bundles. The components of pheochromocytoma expressed PHOX2B(5/5), synaptophysin (5/5), CgA (5/5), the sustentacular cells expressed S-100 protein; the components of ganglioneuroma expressed S-100 protein (5/5), NF (5/5), the ganglion cells were weakly positive for PHOX2B, synaptophysin and CgA. All the cases were surgically resected and all patients were free of recurrence at follow-up. Conclusions: CP is rare adrenal tumor, and it has typical histologic features but no specific clinical manifestations. Attention should be paid to its characteristic histomorphology with the use of PHOX2B, CgA, synaptophysin and S-100 protein immunohistochemistry that is helpful for its diagnosis.
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Affiliation(s)
- Q Q Hu
- Department of Pathology, Zhejiang Provincial People's Hospital, Hangzhou 310014, China
| | - G W Qi
- Department of Pathology, Hangzhou Children's Hospital, Hangzhou 310014, China
| | - J Ma
- Department of Pathology, Zhejiang Provincial People's Hospital, Hangzhou 310014, China
| | - Z R Yang
- Department of Pathology, Zhejiang Provincial People's Hospital, Hangzhou 310014, China
| | - X L He
- Department of Pathology, Zhejiang Provincial People's Hospital, Hangzhou 310014, China
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Gou KJ, Zeng R, Dong Y, Hu QQ, Hu HWY, Maffucci KG, Dou QL, Yang QB, Qin XH, Qu Y. Anti-inflammatory and Analgesic Effects of Polygonum orientale L. Extracts. Front Pharmacol 2017; 8:562. [PMID: 28912714 PMCID: PMC5582316 DOI: 10.3389/fphar.2017.00562] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 08/08/2017] [Indexed: 12/15/2022] Open
Abstract
Background and Purpose:Polygonum orientale L. (family: Polygonaceae), named Hongcao in China, is a Traditional Chinese Medicinal and has long been used for rheumatic arthralgia and rheumatoid arthritis. However, no pharmacological and mechanism study to confirm these clinic effects have been published. In this investigation, the anti-inflammatory, analgesic effects and representative active ingredient compounds of P. orientale have been studied. Methods: Dried small pieces of the stems and leaves of P. orientale were decocted with water and partitioned successively to obtain ethyl acetate and ethyl ether extract of P. orientale (POEa and POEe). Chemical compositions of them were analyzed by UPLC-Q-Exactive HRMS. Anti-inflammatory and analgesic effects of POEa and POEe were evaluated using xylene induced ear edema, carrageenan induced paw edema, Freunds' complete adjuvant induced arthritis, and formaldehyde induced pain in rat. Their mechanisms of anti-inflammatory and analgesic effects were also studied via assays of TNF-α, IL-1β, IL-6, and PGE2 in serum. Results: UPLC-Q-Exactive HRMS analysis showed that POEa and POEe mainly contained flavonoids including orientin, isoorientin, vitexin, luteolin, and quercetin. Furthermore, anti-inflammatory effects of POEa and POEe were evident in xylene induced ear edema. The paw edema in Freund's complete adjuvant and carrageenan were significantly (P < 0.05, 0.01) inhibited by POEa (5, 7.5 g/kg). POEe (7.5 g/kg) was significantly (P < 0.05, 0.01) inhibited Freunds' complete adjuvant induced paw edema and cotton pellet induced granuloma formation. Similarly, POEe significantly (P < 0.05, 0.01) inhibited the pain sensation in acetic acid induced writhing test. POEa (5, 7.5 g/kg) significantly (P < 0.05, 0.01) inhibited formaldehyde induced pain in both phases. POEa (7.5 g/kg) markedly (P < 0.05) prolonged the latency period of hot plate test after 30 and 60 min. The concentrations of TNF-α, IL-1β, IL-6, and PGE2 were significantly (P < 0.01) decreased by POEa (3.75, 5 g/kg). Conclusion: POEa and POEe have anti-inflammatory and analgesic effects, which was mainly relevant to the presence of flavonoids, including orientin, isoorientin, vitexin, luteolin, and quercetin. The mechanism of anti-inflammatory and analgesic effects of POEa may be to decrease the concentrations of TNF-α, IL-1β, IL-6, and PGE2 in serum.
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Affiliation(s)
- Kai-Jun Gou
- College of Pharmacy, Chengdu University of Traditional Chinese MedicineChengdu, China
| | - Rui Zeng
- College of Pharmacy, Southwest University for NationalitiesChengdu, China
| | - Yan Dong
- Affiliated Hospital of Chengdu University of Traditional Chinese MedicineChengdu, China
| | - Qi-Qi Hu
- College of Pharmacy, Chengdu University of Traditional Chinese MedicineChengdu, China
| | - Huang-Wan-Yin Hu
- College of Pharmacy, Chengdu University of Traditional Chinese MedicineChengdu, China
| | | | - Qi-Ling Dou
- Guizhou Yibai Pharmaceutical Co., Ltd.Guizhou, China
| | - Qing-Bo Yang
- Guizhou Yibai Pharmaceutical Co., Ltd.Guizhou, China
| | - Xu-Hua Qin
- College of Pharmacy, Chengdu University of Traditional Chinese MedicineChengdu, China
| | - Yan Qu
- College of Pharmacy, Chengdu University of Traditional Chinese MedicineChengdu, China
- Guizhou Yibai Pharmaceutical Co., Ltd.Guizhou, China
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Fu HB, Shang GF, Lin J, Hu YJ, Hu QQ, Guo L, Zhang YC, Chen JM. Fractional iron solubility of aerosol particles enhanced by biomass burning and ship emission in Shanghai, East China. Sci Total Environ 2014; 481:377-391. [PMID: 24607631 DOI: 10.1016/j.scitotenv.2014.01.118] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 01/27/2014] [Accepted: 01/28/2014] [Indexed: 06/03/2023]
Abstract
In terms of understanding Fe mobilization from aerosol particles in East China, the PM2.5 particles were collected in spring at Shanghai. Combined with the backtrajectory analysis, the PM2.5/PM10 and Ca/Al ratios, a serious dust-storm episode (DSE) during the sampling was identified. The single-particle analysis showed that the major iron-bearing class is the aluminosilicate dust during DSE, while the Fe-bearing aerosols are dominated by coal fly ash, followed by a minority of iron oxides during the non-dust storm days (NDS). Chemical analyses of samples showed that the fractional Fe solubility (%FeS) is much higher during NDS than that during DSE, and a strong inverse relationship of R(2)=0.967 between %FeS and total atmospheric iron loading were found, suggested that total Fe (FeT) is not controlling soluble Fe (FeS) during the sampling. Furthermore, no relationship between FeS and any of acidic species was established, suggesting that acidic process on aerosol surfaces are not involved in the trend of iron solubility. It was thus proposed that the source-dependent composition of aerosol particles is a primary determinant for %FeS. Specially, the Al/Fe ratio is poorly correlated (R(2)=0.113) with %FeS, while the apparent relationship between %FeS and the calculated KBB(+)/Fe ratio (R(2)=0.888) and the V/Fe ratio (R(2)=0.736) were observed, reflecting that %FeS could be controlled by both biomass burning and oil ash from ship emission, rather than mineral particles and coal fly ash, although the latter two are the main contributors to the atmospheric Fe loading during the sampling. Such information can be useful improving our understanding on iron solubility on East China, which may further correlate with iron bioavailability to the ocean, as well as human health effects associated with exposure to fine Fe-rich particles in densely populated metropolis in China.
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Affiliation(s)
- H B Fu
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China
| | - G F Shang
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China
| | - J Lin
- Key Laboratory of Nuclear Analysis Techniques, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Y J Hu
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China
| | - Q Q Hu
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China
| | - L Guo
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China
| | - Y C Zhang
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China
| | - J M Chen
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China
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Zhang HJ, Shi QM, Hu QQ, He BG, Wang Y, Lu XY. [Studies on elimination of mycoplasmas from cell line cultures]. Wei Sheng Wu Xue Bao 1990; 30:154-7. [PMID: 2360325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Mycoplasmas were effectively eliminated from contaminated LTK and CHO cell lines by means of the antibiotic Tiamutin (10 micrograms/ml), while Kanamycin and Gentamycin were less potential. An elimination procedure which involved the consecutive treatment of the cell cloning over a periods of 21-28 days was adopted. This procedure was effective when applied to cell lines contaminated with unidentified and partially non-cultivable strains of mycoplasmas which could be detected by electronic microscope.
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Affiliation(s)
- H J Zhang
- Shanghai Institute of Biological Products, Ministry of Public Health
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