Guinea-pig dermal scar was shown to contain type III collagen, and, from densitometric analysis of gel electrophoretograms, it was shown to have a higher concentration than the surrounding dermis. This finding is consistent with the ‘embryonic’ nature of newly formed dermal wound tissue, reflected in increased hydroxylation of collagen lysine and the presence of dihydroxylysinonorleucine (after reduction) as the major cross-link.

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