Products and 
Classifications 
All products handled by participants listed in this publication meet the specific require- 
ments for a “U.S. Pullorum—Typhoid Clean” classification. The combined letter and 
numeral symbols shown in the fourth column identify the particular breed, strain, or 
trade name of the participant’s products (see tables 3 and 4 in the appendix). Addi- 
tional classifications for which these products qualify are identified in column five by 
MG, “U.S. M. gallisepticum Clean,” and MS, “U.S. M. synoviae Clean." 
