THE MECHANISM OF PHAGE LYSIS 



335 



Fig. 51. 



Fig. 52. 



Fig. 52. 



Figs. 51 and 52. — Electron micrographs of phage action. 



Fig. 51. Adsorption of phage to the surface of Bad coli. ( X 54,000). 



The release of phage from a lysed Bact. coli. The outline of the cell wall, and 



the bacterial debris are seen at the left of the picture. (X 21,000). 



(From micrographs kindly supplied by Dr. S. E. Luria.) 



It should also be noted that, although the multiplication of phage particles and the 

 characteristic lysis associated with it demand the presence of living bacteria, the phage 

 is readily absorbed by dead bacterial cells (see Krueger 1931). As we shall see in a 

 later section, this absorption is specific. 



