title: The collagen content of selected animals.
abstract: The collagen contents of a selected group of animals have been determined and considered in relation to a hypothesis that animals which changed from phosphoarginine to other phosphagens had a selective advantage in converting arginine to proline for the synthesis of connective tissue.
mesh_terms: D000818:Animals; D003094:Collagen / Q000032:analysis*; D005780:Gelatin / Q000032:analysis; D005998:Glycine / Q000032:analysis; D006909:Hydroxyproline / Q000032:analysis; D011392:Proline / Q000032:analysis; D013045:Species Specificity; D014018:Tissue Distribution
chemical_list: D005780:Gelatin; D003094:Collagen; D011392:Proline; D006909:Hydroxyproline; D005998:Glycine