we have studied the quantitative and qualitative aspects of granulocyte-macrophage precursor ( cfuc ) recovery from 29 bags of frozen bone marrow stored at - 160 degree c in the gas phase of liquid nitrogen for several months or years . it has been shown that with the freezing and preservation technique used , over 75 % of the proliferative capacity of the cryopreserved cfuc was recovered .
C0018183
precursor
C0005953
bone marrow