the patients ' serum csa titer for unfractionated bone marrow cells rose markedly with the addition of a small amount of diluted control rabbit serum ( control serum ) into the csa assay system , while it did not rise with addition of the same amount of diluted rabbit antiserum against partially purified human urinary colony-stimulating factor ( csf ) ( antiserum ) .
C0005953
bone marrow
C0009392
colony-stimulating factor