Smithsonian Report, 1959—Lilly Research Laboratories PLATE 2 
1. Schematic representation of invasion by and multiplication of bacteriophage. In a short 
period of time bacterial lysis occurs. The figure represents T-coliphage attacking Escher1- 
chia coli. 
2. Schematic representation of virus invasion and multiplication in animal tissue cell. ‘There 
is no “‘tail,” and cell lysis does not characteristically occur. 
