This paper reports the quantitative results obtained in a comparative study of different
methods of influenza virus cultivation. The methods studied were cultivation in a medium of …

Discussion and Summary In the present report, apparatus and procedures are described for
the culture, harvest and concentration of the influenza virus, for the purpose of preparing …

Studies have been carried out since 1959 at the Coonoor Influenza Centre to devise a
method of cultivating influenza virus in vitro which would be suitable for large-scale virus …

Throat washings in Tyrode's solution were obtained on the second day of illness from a
patient acutely ill with influenza. The material was centrifugalized at 2500 revolutions per …

The in vitro cultivation of strains of human influenza virus has been successfully conducted
through a prolonged series of successive transfers. The cultivated virus has retained the …

The concentration and purification of influenza virus by means of differential centrifugation in
a vacuum type centrifuge, by adsorption on and elution from adult chicken red cells, by …

Cultivation of Influenza Virus in the Chorio-Allantoic Membrane of Deembryonated Eggs. Page
1 680 INFLUENZA VIRUS IN chloro-4, 4’-diaminodiphenyl sulfone, like thromboplastin with …

MATERIALS AND METHODS Viru8e8. The PR8 and CC strains of influenza A virus and the
Lee strain of influenza B were used in the study. Egg-to-eg pa8sage. Three eggs containing …

Regular reproduction of influenza A virus with infectious titres of 7.4--8.5 log EID50/0.2 ml
was observed in roller bovine embryo kidney cell cultures. The haemagglutinating activity of …

Influenza virus vaccines containing from 1 to 10 mg. of virus materials per cc. concentrated
and purified from infectious allantoic fluids by means of one or two cycles of differential …