Survival of Lethally X-Irradiated Rats Receiving Marrow from Normal or Chlorambucil-Treated Donor Rats

Abstract
Marrow from chlorambucil-treated rats when transfused into rats exposed to lethal total-body X-irradiation gave a higher survival rate than did the same amount of marrow from normal rats. Differential counts of the marrow from the chlorambucil-pretreated donor rats indicated that the treated marrow contained a greater number of immature cells.