Abstract
DURING the past three years, reports describing human-bone-marrow infusions have been steadily increasing in number. These include the use of autologous1 2 3 (from the same patient), isologous4 (from an identical twin) and homologous5 6 7 (from another person, not genetically identical) marrow for a great variety of therapeutic regimens. The source of the marrow or other hematopoietic tissue has often been subject to practical as well as scientific choice. Fetal liver and spleen, fresh cadavers, operative specimens of rib or ilium and healthy volunteers have all been used as donors. Methods of obtaining marrow from each of these sources and technics for processing . . .