the wb-f344 normal cultured rat liver epithelial cell line does not secrete an epidermal growth factor-like ( putatively tgf-alpha ) activity , but several clonal cell strains derived from wb-f344 cells which had been treated with n-methyl-n'-nitro-n-nitrosoguanidine , especially those that expressed high levels of gamma-glutamyl transpeptidase , secreted tgf-alpha-like activity into their conditioned media .
C0007634
cells
C1327616
secreted