the following cells were cultured : normal skin fibroblasts ( f ) , normal ( k ) and sv 40 transformed ( svk14 ) keratinocytes , and a number of squamous carcinoma cell ( scc ) lines in which the defective terminal differentiation was found to occur in the following order of intensity : scc-12f2 less than scc-25 approximately equal to scc-15 less than scc-12b2 less than scc-4 .
C0007634
cells
C0016030
fibroblasts