Orga­niz­a­ti­on respon­si­ble for the recruit­ment and care of vol­un­ta­ry stem cell donors (donor recruit­ment). The donor cen­ter for­wards anony­mi­zed data important to a donor search to the ZKRD. Later, it con­ducts fur­ther tests on donors at the request of the ZKRD and liai­ses with donors until the bone mar­row or peri­pheral blood stem cell trans­plan­ta­ti­on takes place. It also pro­vi­des donors with gui­d­ance whenever needed.