FAMILY PHAGACEAE 



1133 



Induced disease : Medium size plaques, 

 1 to 3 mm in diameter, with distinct lialo. 



Serological relationships : Cross reac- 

 tions with bacteriophages C35, C26, C47, 

 and C34, but not with S13, C13, C36, D5, 

 D20, D13, D3, S8, C21, C16, or D6. 



Immunological relationships : Member 

 of Resistance Group II. 



Other properties: Particle size, 25 to 

 40 millimicrons. 



Literature: Burnet, Jour. Path, and 

 Bact.,S6, 1933, 307-318. 



Serological relationships : No cross - 

 neutralization reactions with bacterio- 

 phages S13, C13, C36, Do, D20, D13, CIS, 

 D3,C21,C16,orD6. 



Immunological relationships : Member 

 of Resistance Group I. 



Other properties : Particle size, 30 to 

 45 millimicrons. 



Literature : Burnet, Jour. Path, and 

 Bact., 36, 1933, 307-318; Brit. Jour. Exp. 

 Path., 14, 1933, 100-108; Gough and 

 Burnet, ibid., 38, 1934, 301-311. 



8. Phagus astrictus H. {loc. cit., 145). 

 From Latin astrictus, limited, in refer- 

 ence to inability to Ij'se Escherichia coli 

 Castellani and Chalmers. 



Common names : Bacteriophage D3 ; 

 "smooth" dysentery phage. 



Host : Shigella dysenteriae Castellani 

 and Chalmers. 



Insusceptible species : Escherichia coli 

 Castellani and Chalmers. 



Induced disease : Medium size plaques, 

 1 to 3 mm in diameter, with distinct halo. 



Serological relationships: No cross- 

 neutralization reactions with bacterio- 

 phages S13, C13, C36, D5, D20, D13, C18, 

 S8, C21,C16,orD6. 



Immunological relationships : Member 

 of Smooth Dysentery Resistance Group. 



Other properties : Particle size, 25 to 40 

 millimicrons. Nearly all inactivated by 

 1 : 25,000 methylene blue in 2 mm layer 20 

 cm from 100 candle-power light for 30 

 minutes. 



Literature: Burnet, Jour. Path, and 

 Bact., 36, 1933,307-318. 



10. Phagus coli H. {loc. cit., 146). 

 From Latin colon, the colon. 



Conmion names : Bacteriophage C21 or 

 C5; specific coli phage. 



Host : Escherichia coli Castellani and 

 Chalmers. 



Insusceptible species : Shigella dysen- 

 teriae Castellani and Chalmers. 



Induced disease : Small plaques, 0.5 

 to 1.5 mm in diameter, with soft edge or 

 very narrow halo. 



Serological relationships : No cross- 

 neutralization with bacteriophages S13, 

 C13, C36, D5, D20, D13, C18, D3, S8, 

 C16, or D6. 



Immunological relationships : Member 

 of Specific Escherichia coli Resistance 

 Group. 



Other properties : Particle size, 30 to 45 

 millimicrons. Completely inactivated 

 by 1 : 25,000 methylene blue in 2 mm layer 

 20 cm from 100 candle-power light for 30 

 minutes. 



Literature: Burnet, Jour. Path, and 

 Bact., 36,1933,307-318. 



9. Phagus major H. {loc. cit., 146). 

 From Latin major, greater, in reference 

 to particle size. 



Common name : Bacteriophage S8, L, 

 S28, C33,or S41. 



Hosts : Escherichia coli Castellani and 

 Chalmers ; Shigella dysenteriae Castellani 

 and Chalmers. 



Induced disease : Small plaques, 0.5 to 

 1.5 mm in diameter, with soft edge or 

 narrow halo. 



11. Phagus artus H. {loc. cit., 148). 

 From Latin artus, narrow, in reference to 

 limited host range. 



Common names : Bacteriophage D6, 

 D33; smooth dysentery phage. 



Host : Shigella dysenteriae Castellani 

 and Chalmers, smooth strains. 



Induced disease : Small plaques, 0.5 to 

 1.5 mm in diameter, with soft edge or 

 very narrow halo. 



Serological relationships : Not neu- 



