when chick embryo fibroblasts were seeded in the presence of minimum essential medium supplemented with 1 % ( v/v ) horse serum , the rate of cell attachment , after 1 hr incubation , was less than 5 % at ph 6.5 and about 50 % and 80 % at ph 7.5 and ph 8.3 , respectively .
C0016030
fibroblasts
C0007634
the