differences in the extraction of lymphocyte subsets from blood by the lymph node were found with cd4+ lymphocytes being extracted at a faster rate ( 1/2 ) than cd8+ , sbu-t19+ , major histocompatibility complex class ii+ and b cells ( 1/4 to 1/5 ) .
C0039215
cd4
C0019630
major histocompatibility complex class