We investigated the expression of different cell adhesion molecules on
cord blood (CB) and bone marrow (BM) CD34(+)/CD38(+) and CD34(+)/CD38
(-) cells. CD11a and CD62L mere more expressed in CB than in BM CD34()/CD38(-) subset, suggesting a possible advantage in homing and engraf
tment, A short exposure to various cytokines increased CD62L expressio
n only in the more differentiated CB and BM CD34(+)/CD38(+) cells.