it is concluded that : ( 1 ) whole human serum stimulates gag secretion by sparse cell cultures , ( 2 ) lfs can support cell growth but not gag secretion , ( 3 ) ldl stimulates gag secretion but has a cytotoxic effect , ( 4 ) the degree of gag stimulation by ldl is dependent on the proliferative state of cells , ( 5 ) at low serum concentrations fibroblasts and fetal smooth muscle cells show differences in response to ldl which are not evident at higher serum concentration .
C0007595
cell growth
C0007634
cells