The results of electronic microscopic study is presented of phage filtrates (tested for sterility) of 2 strains of Bact. coli aerogenes. Various elements of bacterial origin, different in size and form, as well as half cells with granules and intact microbe cells with or without partially or completely preserved flagellar antigen were revealed.
It is emphasized that one has to be very careful in working with the filterable forms of microbes since the cells may sometimes pass through asbestos filters
S. F.
and be found in the filtrate.
Presented by Active Member USSR Academy of Medical Sciences, N. N. Zhukov-Verezhnikov