Table 2.

Stem cell source influences immune reconstitution and complications after HSCT.

Complication	PBSCs	BM	CB
aGvHD	++	+	+/−
Infections	+	+	++
Viral reactivations	++	++	+/−
Relapse	+/−	++	++

The table summarizes the influence of different stem cell sources on the immune reconstitution and selected complications after HSCT. The degree of association is indicated by plus (+).

aGvHD, acute graft-versus-host disease; PBSCs, peripheral blood stem cells; BM, bone marrow; CB, cord blood; ++, high; +, moderate; and +/−, low.