highly significantP < 0-001
Normal mean = 0-32, CLL mean = 0 04, giving a highly significant difference between the two groups (t = 1 -I 1, degree of freedom = 59, P < 0-001). 0 N 116 n m n N-ACETYL NEURAMINIC ACID CONTENT OF HUMAN LYMPHOCYTES former method was used in all further preparations.