scatchard analyses of specific [ 3h ] dexamethasone binding to the fibroblasts of young and aged men showed a single class of high-affinity binding sites with a mean ( +/- sd ) binding site concentration ( bmax ) of 12.69 +/- 2.36 x 10 ( 4 ) and 12.87 +/- 12.21 x 10 ( 4 ) sites/cell , respectively , and mean ( +/- sd ) dissociation constant ( kd ) of 5.60 +/- 0.41 and 7.36 +/- 2.17 nm , respectively .
C0016030
fibroblasts
C0007634
cell