in vitro treatment with 2 micrograms/2 x 10 ( 6 ) cells melphalan ( l-pam : l-phenylalanine mustard ) significantly decreased the total number of t lymphocytes from peripheral blood ( pbl ) of healthy human donors and of the okt4 population ( precursor suppressor/helper/inducer ) t cells as defined by monoclonal antibodies okt3 and okt4 , respectively .
C0229664
peripheral blood
C1518997
pbl