this suggests that one or more factor ( s ) , required for hydrocortisone-inducible tat gene transcription , and not available in fetal liver until birth ( gluecksohn-waelsch : cell , 18:225-237 , 1979 ) appear in fetal hepatocytes upon cultivation during this `` '' maturation '' '' period , thus permitting precocious tat gene expression in vitro .
C1517162
fetal liver
C0015965
fetal