Eaton MD, Meiklejohn G, van Herick W. STUDIES ON THE ETIOLOGY OF PRIMARY ATYPICAL PNEUMONIA : A FILTERABLE AGENT TRANSMISSIBLE TO COTTON RATS, HAMSTERS, AND CHICK EMBRYOS.
ACTA ACUST UNITED AC 2010;
79:649-68. [PMID:
19871393 PMCID:
PMC2135382 DOI:
10.1084/jem.79.6.649]
[Citation(s) in RCA: 210] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
1. A filterable virus from certain cases of primary atypical pneumonia was transmitted to chick embryos by inoculation into the amnion of suspensions of bacteriologically sterile lung tissue or filtered sputum, and three strains were adapted by passage. 2. After intranasal inoculation into cotton rats or hamsters, suspensions of the infected chick embryo tissues produced pulmonary lesions which were similar to those seen after instillation of infective human material. 3. The agent propagated in chick embryos was specifically neutralizable by serum from patients recovered from primary atypical pneumonia and was not neutralized by the acute-phase specimens. 4. Passages of the virus in cotton rats and hamsters gave confusing results because of contamination with latent respiratory agents already present in the animals.
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