The present invention relates to collagen hydrogels. Particularly, the invention relates to hydrogels comprising a telopeptide collagen (“telo-collagen”) and an atelopeptide collagen (“atelo-collagen”); hydrogels comprising collagen and chitosan; methods of making the hydrogels; methods of reducing gelation of a hydrogel mixture at room temperature; methods of reducing compaction of cells; and methods of culturing cells on such hydrogels.
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