Here, we present a protocol for the preparation of two different forms of culture substrates utilizing type I collagen. Depending on how collagen is handled, collagen molecules either maintain two-dimensional, non-fibrous form or reassemble into three-dimensional, fibril form. Cell proliferation on type I collagen is drastically affected by fibril formation.
Fujisaki, H., Futaki, S., Mizuno, K., Hattori, S. Evaluation of Keratinocyte Proliferation on Two- and Three-dimensional Type I Collagen Substrates. J. Vis. Exp. (146), e59339, doi:10.3791/59339 (2019).