Year-end Sale % OFF 
Abstract
Experiments to determine the optimum conditions for propagation of the virus of atypical pneumonia in chick embryos are described. Variations in the activity of infected chick embryo material were investigated. The highest dilution of chick embryo suspension producing pulmonary lesions in hamsters and cotton rats is not over 10(-3). Dilutions of 10(-4) infect chick embryos. The virus is unstable at room temperature and also loses activity when stored in a dry-ice refrigerator unless the suspensions are kept in sealed glass tubes. Filtration experiments indicate a maximum particle size of 180 to 250 mmicro. The virus propagated in chick embryos produces pulmonary lesions in hamsters and cotton rats which have been immunized to their own non-bacterial agents inducing pulmonary lesions. Of these, the pneumonia virus of hamsters most frequently causes intercurrent respiratory infections, and methods of controlling epizootics due to this agent are described.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
