to investigate further the nature of fibroblast influence on epithelial cells , percoll-purified epithelial cells from collagenase-dissociated mammary glands of mid-pregnant balb/c mice were co-cultured with mammary fibroblasts that were either untreated , irradiated , or glutaraldehyde-killed or with fibroblast-conditioned medium .
C0929301
mammary glands
C0006141
mammary