The effect of some growth factors on morphogenetic processes in the primary culture of human epidermal keratinocytes was studied in the model of formation of tubule-like structures in collagen gel. Culturing of keratinocytes in the presence of IGF and bFGF did not induce growth of tubule-like structures, whereas EGF, KGF, and HGF promoted the growth of three-dimensional epidermal outgrowths whose shape and size varied depending on the growth factor used.
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