it exhibited considerable charge heterogeneity during isoelectric focusing and was not affected by neuraminidase treatment , p75 was synthesized by thymus , spleen and lymph node cells , by antigen-stimulated t-cells from strain 13 and strain 2 guinea-pigs , and by guinea-pig b-cell l2c leukemia lines , but not by normal b-lymphocytes or macrophages .
C0023434
b-cell
C0004561
b-lymphocytes