rbp secretion and accumulation per mg of cell protein could be modulated by the concentration of fetal calf serum in the growth medium : secreted rbp equaled 782 +/- 123 ng/mg of cell protein per 8 hr after preincubation with 10 % fetal calf serum versus 555 +/- 86 ng/mg per 8 hr in the absence of serum , whereas rbp in cell sonicates decreased only slightly .
C1327616
secreted
C0007634
cell