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de Melo Pereira GV, Beux M, Pagnoncelli MGB, Soccol VT, Rodrigues C, Soccol CR. Isolation, selection and evaluation of antagonistic yeasts and lactic acid bacteria against ochratoxigenic fungus Aspergillus westerdijkiae on coffee beans. Lett Appl Microbiol 2016; 62:96-101. [PMID: 26544541 DOI: 10.1111/lam.12520] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 10/27/2015] [Accepted: 10/28/2015] [Indexed: 11/26/2022]
Abstract
UNLABELLED In this study, yeasts and lactic acid bacteria (LAB) were isolated from coffee fruits and identified via biochemical and molecular approaches. The isolates represented the Pichia, Debaryomyces, Candida, Clavispora, Yarrowia, Sporobolomyces, Klyveromyces, Torulaspora and Lactobacillus genera. Four isolates, namely Pichia fermentans LPBYB13, Sporobolomyces roseus LPBY7E, Candida sp. LPBY11B and Lactobacillus brevis LPBB03, were found to have the greatest antagonist activity against an ochratoxigenic strain of Aspergillus westerdijkiae on agar tests and were selected for further characterization. Applications of P. fermentans LPBYB13 in coffee cherries artificially contaminated with A. westerdijkiae showed efficacy in reducing ochratoxin A (OTA) content up to 88%. These results highlight that P. fermentans LPBYB13 fulfils the principle requirements of an efficient biological control of aflatoxigenic fungi in coffee beans and may be seen as a reliable candidate for further validation in field conditions. SIGNIFICANCE AND IMPACT OF THE STUDY Studies based on microbial ecology and antagonistic interactions are important for the development of new strategies in controlling aflatoxin contamination of crops and are relevant to further biotechnological applications. This study shows that coffee fruit is a potential source for the isolation of microbial strains with antifungal ability. A new yeast strain, Pichia fermentans LPBYB13, showed efficacy in reducing growth and ochratoxin A production of Aspergillus westerdijkiae in coffee beans. Our results should encourage the use of this yeast strain on a large scale for biocontrol of aflatoxigenic fungi in coffee beans.
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Affiliation(s)
- G V de Melo Pereira
- Bioprocess Engineering & Biotechnology Department, Federal University of Paraná, Curitiba, PR, Brazil
| | - M Beux
- Food Technology Postgraduate Program, Federal University of Paraná, Curitiba, PR, Brazil
| | - M G B Pagnoncelli
- Bioprocess Engineering & Biotechnology Department, Federal University of Paraná, Curitiba, PR, Brazil.,Bioprocess Engineering & Biotechnology Department, Federal University of Technology - Paraná, Dois Vizinhos, PR, Brazil
| | - V T Soccol
- Bioprocess Engineering & Biotechnology Department, Federal University of Paraná, Curitiba, PR, Brazil
| | - C Rodrigues
- Bioprocess Engineering & Biotechnology Department, Federal University of Paraná, Curitiba, PR, Brazil
| | - C R Soccol
- Bioprocess Engineering & Biotechnology Department, Federal University of Paraná, Curitiba, PR, Brazil.,Food Technology Postgraduate Program, Federal University of Paraná, Curitiba, PR, Brazil
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Koch MO, Weiss RR, Cruz AA, Soccol VT, Gonçalves KA, Bertol MAF, Beltrame OC, Dittrich RL. Detection and isolation ofToxoplasma gondiifrom fresh semen of naturally infected dogs in Southern Brazil. Reprod Domest Anim 2016; 51:550-4. [DOI: 10.1111/rda.12718] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 05/18/2016] [Indexed: 11/28/2022]
Affiliation(s)
- MO Koch
- Programa de Pós-Graduação em Ciências Veterinárias; Universidade Federal do Paraná; Curitiba Paraná Brazil
| | - RR Weiss
- Programa de Pós-Graduação em Engenharia de Bioprocessos e Biotecnologia; Universidade Federal do Paraná; Curitiba Paraná Brazil
| | - AA Cruz
- Laboratório de Bioquímica; Faculdade de Ciências Veterinárias; Universidade de Camagüey; Camagüey Cuba
| | - VT Soccol
- Programa de Pós-Graduação em Engenharia de Bioprocessos e Biotecnologia; Universidade Federal do Paraná; Curitiba Paraná Brazil
| | - KA Gonçalves
- Programa de Pós-Graduação em Ciências Veterinárias; Universidade Federal do Paraná; Curitiba Paraná Brazil
| | - MAF Bertol
- Programa de Pós-Graduação em Engenharia de Bioprocessos e Biotecnologia; Universidade Federal do Paraná; Curitiba Paraná Brazil
| | - OC Beltrame
- Laboratório de Patologia Clínica Veterinária; Universidade Federal do Paraná; Curitiba Paraná Brazil
| | - RL Dittrich
- Programa de Pós-Graduação em Ciências Veterinárias; Universidade Federal do Paraná; Curitiba Paraná Brazil
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Lopes WDZ, Cruz BC, Soares VE, Nunes JLN, Teixeira WFP, Maciel WG, Buzzulini C, Pereira JCM, Felippelli G, Soccol VT, de Oliveira GP, da Costa AJ. Historic of therapeutic efficacy of albendazol sulphoxide administered in different routes, dosages and treatment schemes, against Taenia saginata cysticercus in cattle experimentally infected. Exp Parasitol 2013; 137:14-20. [PMID: 24309372 DOI: 10.1016/j.exppara.2013.11.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 09/11/2013] [Accepted: 11/26/2013] [Indexed: 11/15/2022]
Abstract
The present study aimed to notify the history of albendazole sulphoxide (ALB-SO) and albendazole (ALBZ) efficacy against Taenia saginata cysticercus (Cysticercus bovis) parasitizing experimentally infected bovines. A total of 11 efficacy trials were performed between the years of 2002 and 2010. In order to perform these trials, animals were individually inoculated with 2×10(4) eggs of T. saginata in each study's day zero (D0). For every trial, a positive control group (untreated infected animals) and a negative control group (animals that were neither infected nor treated) were used. ALB-SO or ALB were administered in the different dosages, in different days of treatments. In a last study with this formulation, this active principle was administered orally, mixed with the mineral supplement, on the 60th DPI, in a dosage of 30mg/kg. In all trials, on the 100th DPI, all animals were euthanized and submitted to the sequenced slicing of 26 anatomical segments (fragments of approximately five millimeters) for the survey of T. saginata cysticercus. With the obtained results it is possible to verify that in the first trials, conducted in 2002, ALB-SO reached, independently of dosage and treatment scheme, efficacies superior to 98% (arithmetic means). The trials conducted in 2005 (2.5mg/kg on the 30th, 60th, and 90th DPI) obtained values of efficacy all inferior to 60%. In 2008, the trials with 2.5 and 7.7mg/kg demonstrated efficacy values inferior to 40%, for both dosages and treatment schemes (30th/60th/90th DPI and 60th DPI). When this formulation was administered orally on the dosage of 30mg/kg on the 60th DPI, the efficacy against T. saginata cysticercus reached 88.28%. ALB administered orally showed efficacy values of 0.0%, 29.88% and 28.64% in the dosages of 5, 10 and 15mg/kg, respectively, using the treatment schemes described above for each dosage. Based on the results of these trials, conducted in an eight year period (2002-2010) using the sequenced slicing method for evaluating the efficacy of the aforementioned formulations against T. saginata cysticercus, it is possible to observe that, amongst the few molecules used in the chemotherapic treatment against T. saginata larvae, ALB-SO, administered in varied routes, dosages and treatment schemes, the studies conducted in 2008, 2009, and 2010, have a low therapeutic efficacy against C. bovis in Brazil, while ALBZ had insignificant efficacy values against T. saginata larvae parasitizing experimentally infected bovines. However, future studies using molecular biology will be necessary to assess whether the difference on the efficacy of the ALB-SO can be related to strain or another specific factor.
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Affiliation(s)
- Welber Daniel Zanetti Lopes
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Via de Acesso Prof. Paulo Donatto Castellani, s/n CEP 14884-900, Jaboticabal, São Paulo, Brazil.
| | - Breno Cayeiro Cruz
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Via de Acesso Prof. Paulo Donatto Castellani, s/n CEP 14884-900, Jaboticabal, São Paulo, Brazil
| | - Vando Edésio Soares
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Via de Acesso Prof. Paulo Donatto Castellani, s/n CEP 14884-900, Jaboticabal, São Paulo, Brazil; Universidade Camilo Castelo Branco - UNICASTELO. Av. Hilário da Silva Passos, 950. Parqui universitário - Descalvado-SP, CEP13690-970, Brazil
| | - Jorge Luis N Nunes
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Via de Acesso Prof. Paulo Donatto Castellani, s/n CEP 14884-900, Jaboticabal, São Paulo, Brazil; Centro Universitário Barão de Mauá. Rua Laguna, 241 - Jardim Paulista, Ribeirão Preto-SP, CEP 1409-180, Brazil
| | - Weslen Fabricio Pires Teixeira
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Via de Acesso Prof. Paulo Donatto Castellani, s/n CEP 14884-900, Jaboticabal, São Paulo, Brazil
| | - Willian Giquelin Maciel
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Via de Acesso Prof. Paulo Donatto Castellani, s/n CEP 14884-900, Jaboticabal, São Paulo, Brazil
| | - Carolina Buzzulini
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Via de Acesso Prof. Paulo Donatto Castellani, s/n CEP 14884-900, Jaboticabal, São Paulo, Brazil
| | - João Carlos Melo Pereira
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Via de Acesso Prof. Paulo Donatto Castellani, s/n CEP 14884-900, Jaboticabal, São Paulo, Brazil
| | - Gustavo Felippelli
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Via de Acesso Prof. Paulo Donatto Castellani, s/n CEP 14884-900, Jaboticabal, São Paulo, Brazil
| | - Vanette Thomaz Soccol
- Universidade Federal do Paraná. Rua Quinze de Novembro, Curitiba-PR, CEP 80060-000, Brazil
| | - Gilson Pereira de Oliveira
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Via de Acesso Prof. Paulo Donatto Castellani, s/n CEP 14884-900, Jaboticabal, São Paulo, Brazil
| | - Alvimar José da Costa
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Via de Acesso Prof. Paulo Donatto Castellani, s/n CEP 14884-900, Jaboticabal, São Paulo, Brazil
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Soares VE, De Andrade Belo MA, Rezende PCB, Soccol VT, Fukuda RT, De Ooliveira GP, Da Costa AJ. Distribution of Taenia saginata metacestodes: a comparison of routine meat inspection and carcase dissection results in experimentally infected calves. Ann Trop Med Parasitol 2011; 105:393-401. [PMID: 21929881 PMCID: PMC4052443 DOI: 10.1179/1364859411y.0000000028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A comparison of techniques for detecting the presence of Cysticercus bovis in bovine carcasses was made by using carcass dissection and routine beef inspection guidelines. In the study, 28 calves were used after they were tested and found to be negative for the presence of anti-C. bovis serum antibodies and were inoculated orally with aliquots containing 6×104Taenia saginata eggs. One hundred and twenty days after inoculation, the animals were slaughtered and a post mortem evaluation was done following Brazilian Federal Beef Inspection guidelines. This routine meat inspection was able to identify 71.42% of the assessed infected carcasses as being parasitized. This result implies that 28.58% of the infected carcasses would have been released as fit for human consumption since they would have been considered as free of C. bovis infection when using this method for carcass assessment. Only 3.07% of the total 2311 metacestodes present in the carcasses were identified by the conventional procedures of sanitary inspection. The assessment of different parts of the carcasses showed high infestation rates in shoulder clod (14.37%), head (11.21%), neck+chuck roll (8.05%), heart (7.75%) and top (inside) round (7.18%) which, together, were responsible for housing 48.51% of all the cysts found in the 24 beef cuts assessed. These numbers contrasted to the low incidence of cysts found in organs such as tongue (3.12%), diaphragm (1.69%) and esophagus (1.60%) which are usually described as predilection sites for the parasite.
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Affiliation(s)
- V E Soares
- Camilo Castelo Branco University, Descalvado, SP, Brazil
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Locatelli-Dittrich R, Soccol VT, Richartz RR, Gasino-Joineau ME, Vinne R, Pinckney RD. Serological diagnosis of neosporosis in a herd of dairy cattle in southern Brazil. J Parasitol 2001; 87:1493-4. [PMID: 11780849 DOI: 10.1645/0022-3395(2001)087[1493:sdonia]2.0.co;2] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Neospora caninum-specific antibodies were detected in 60 of 172 (34.8%) dairy cattle by enzyme-linked immunosorbent assay (ELISA) in a herd from Parana State, Brazil. The seropositive animals included 47 of 126 (37.3%) adult cows, 7 of 29 (24%) heifers (1-2 yr), 4 of 15 (27%) heifers (5 mo-1 yr), and 2 precolostral samples. Data collected over a 9-yr follow-up period revealed that the proportion of pregnancies ending in abortion was 20% (31/154) among ELISA seropositive cows and 8% (15/193) among seronegative cows. The farm recorded 46 abortions, of which 31 (67.3%) were from seropositive cows. All sera positive by ELISA (n = 60) and sera from cows (n = 11) that were ELISA-negative but that had aborted were tested by the indirect fluorescent antibody test (IFAT) at dilutions from 1:25 to 1:200. All sera from ELISA-positive cows (n = 47) had an IFAT titer of 1:25:35 (74%) of these sera were also seropositive at a dilution of 1:200 (IFAT). Cows seropositive by ELISA had a 4-fold increased risk of having aborted at least once, compared to ELISA-seronegative cows. This association was statistically significant (P = 0.0016). The attributable fraction for this association indicated that approximately 76% of the risk for a cow having a history of abortion was attributable to seroconversion to N. caninum.
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Affiliation(s)
- R Locatelli-Dittrich
- Universidade Federal do Paraná, S.C.A., Departamento de Medicina Veterinária, Curitiba, Brazil
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Abstract
Phytases (myo-inositol hexakisphosphate phosphohydrolase, EC 3.1.3.8) catalyse the release of phosphate from phytate (mycoinositol hexakiphosphate). Several cereal grains, legumes and oilseeds, etc., store phosphorus as phytate. Environmental pollution due to the high-phosphate manure, resulting in the accumulation of P at various locations has raised serious concerns. Phytases appear of significant value in effectively controlling P pollution. They can be produced from a host of sources including plants, animals and micro-organisms. Microbial sources, however, are promising for their commercial exploitations. Strains of Aspergillus sp., chiefly A. ficuum and A. niger have most commonly been employed for industrial purposes. Phytases are considered as a monomeric protein, generally possessing a molecular weight between 40 and 100 kDa. They show broad substrate specificity and have generally pH and temperature optima around 4.5-6.0 and 45-60 degrees C. The crystal structure of phytase has been determined at 2.5 A resolution. Immobilization of phytase has been found to enhance its thermostability. This article reviews recent trends on the production, purification and properties of microbial phytases.
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Affiliation(s)
- A Pandey
- Biotechnology Division, Council of Scientific and Industrial Research, Trivandrum, India.
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Abstract
INTRODUCTION In the period of 1996-1999 some virus associated with encephalitis have been reported in horses from different regions of Paraná State, Brazil. To identify the etiologic agent associated with this illness, mosquitoes and serum samples were collected in the endemic area. METHODS The study area corresponded to four municipalities of Paraná State, Brazil. Mosquitoes were captured in Shannon trap and human bait. After identification, they were processed for virus isolation. Blood of equines were collected in the municipalities of Querência do Norte and Colorado. Antibodies to different Alphavirus and Flavivirus were analyzed by hemagglutination inhibition test. Specific seroneutralization reactions were performed in those sera with a positive reaction in the hemagglutination test. RESULTS The mosquitoes genus collected were: Culex, Aedes, Mansonia, Coquillettidia, Psorophora, Sabethes, Wyeomyia, and Limatus. Even thought no virus was isolated, serologic analyses showed hemagglutinazing antibodies to Eastern equine encephalitis, Mucambo, Pixuna, Maguari, and St Luis encephalitis viruses. The neutralization test showed specific reaction to Eastern equine encephalitis virus in 12 tested sera. CONCLUSIONS Species of mosquitoes that could be potential vectors of encephalitis, buniavirus, and other arboviruses of epidemiological importance were collected. It is believed that Eastern equine encephalitis virus affected the equines populations in the study regions because of the symptoms and antibodies for the virus in the sera detected in these equines.
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Affiliation(s)
- Z Fernández
- Instituto Nacional de Higiene Rafael Rangel, Caracas, Venezuela.
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Abstract
This review makes a comprehensive survey of microbial amylases, i.e. alpha-amylase, beta-amylase and glucoamylase. Amylases are among the most important enzymes and are of great significance in present-day biotechnology. Although they can be derived from several sources, such as plants, animals and micro-organisms, the enzymes from microbial sources generally meet industrial demands. Microbial amylases could be potentially useful in the pharmaceutical and fine-chemical industries if enzymes with suitable properties could be prepared. With the advent of new frontiers in biotechnology, the spectrum of amylase application has widened in many other fields, such as clinical, medicinal and analytical chemistries, as well as their widespread application in starch saccharification and in the textile, food, brewing and distilling industries. In this review, after a brief description of the sources of amylases, we discuss the molecular biology of amylases, describing structures, cloning, sequences, and protoplast fusion and mutagenesis. This is followed by sections on their production and finally the properties of various amylases.
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Affiliation(s)
- A Pandey
- Laboratorio de Processos Biotecnologicos, Departamento de Engenharia Quimica, Universidade Federal do Parana (UFPR), CEP 81531-970 Curitiba-PR, Brazil
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Pandey A, Soccol CR, Selvakumar P, Soccol VT, Krieger N, Fontana JD. Recent developments in microbial inulinases. Its production, properties, and industrial applications. Appl Biochem Biotechnol 1999; 81:35-52. [PMID: 10533713 DOI: 10.1385/abab:81:1:35] [Citation(s) in RCA: 151] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/1998] [Revised: 02/05/1999] [Accepted: 02/11/1999] [Indexed: 11/11/2022]
Abstract
Microbial inulinases are an important class of industrial enzymes that have gained much attention recently. Inulinases can be produced by a host of microorganisms, including fungi, yeast, and bacteria. Among them, however, Aspergillus sp. (filamentous fungus) and Kluyveromyces sp. (diploid yeast) are apparently the preferred choices for commercial applications. Among various substrates (carbon source) employed for their production, inulin-containing plant materials offer advantages in comparison to pure substrates. Although submerged fermentation has been universally used as the technique of fermentation, attempts are being made to develop solid-state fermentation technology also. Inulinases catalyze the hydrolysis of inulin to D-fructose (fructose syrup), which has gained an important place in human diets today. In addition, inulinases are finding other newer applications. This article reviews more recent developments, especially those made in the past decade, on microbial inulinases--its production using various microorganisms and substrates. It also describes the characteristics of various forms of inulinases produced as well as their applications.
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Affiliation(s)
- A Pandey
- Departamento Engenharia Quimica, Universidade Federal do Parana, Curitiba, Brazil.
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Pandey A, Benjamin S, Soccol CR, Nigam P, Krieger N, Soccol VT. The realm of microbial lipases in biotechnology. Biotechnol Appl Biochem 1999; 29:119-31. [PMID: 10075908] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
In this review, a comprehensive and illustrious survey is made of the applied aspects of microbial lipases in modern biotechnological practices. Lipases are the most versatile biocatalyst and bring about a range of bioconversion reactions such as hydrolysis, interesterification, esterification, alcoholysis, acidolysis and aminolysis. After a brief description of the microbial sources of lipases, the pivotal role of lipases in the processes and products of the food and flavourings industry is illustrated. An illustration is presented of biomedical applications. The panorama of lipases in the manufacture of fine chemicals is depicted with special emphasis on pharmaceuticals, pesticides, cosmetics, biosensors and detergents. Widening applications such as those in waste management and improved tanning techniques are other novel aspects of lipase utilization that are discussed in this review.
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Affiliation(s)
- A Pandey
- Laboratorio de Processos Biotecnologicos, Departamento Engenharia Quimica, Universidade Federal do Parana (UFPR), CEP 81531-970 Curitiba-PR, Brazil
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Soccol VT, Sotomaior C, Souza FP, Castro EA, Pessôa Silva MC, Milczewski V. Occurrence of resistance to anthelmintics in sheep in Paraná State, Brazil. Vet Rec 1996; 139:421-2. [PMID: 8923717 DOI: 10.1136/vr.139.17.421] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- V T Soccol
- Basic Pathology Department, Universidade Federal do Paraná J. Américas, Curitiba, Brazil
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