chemically , the immunogenic nucleic acid fractions contained from 1 to 3 % `` '' contaminant '' '' material defined ( based on the mean of 19 different preparations ) as protein ( 0.24 % ) , deoxyribonucleic acid ( 0.43 % ) , methyl pentose ( 0.64 % ) , hexose ( 1.58 % ) , and undefined carbohydrate ( 0.76 % ) .
C0028606
nucleic acid
C0012854
, deoxyribonucleic ac