leukemic b cells rigorously depleted of t cells did not give rise to measurable frequencies of plp , hlp , or clp ( f less than 1/50.000 ) except in one cll patient where a significant frequency ( f = 1/1700 ) of hlp was consistently present in e- cells , despite the absence of growth-inducible plp and clp .
C0004561
b cells
C0023434
cll