title: Attaching human fibroblasts secrete a type I procollagen rich in 3-hydroxyproline.
mesh_terms: D002478:Cells, Cultured; D005347:Fibroblasts / Q000378:metabolism; D006801:Humans; D006909:Hydroxyproline / Q000032:analysis*; D007231:Infant, Newborn; D008297:Male; D011347:Procollagen / Q000302:isolation & purification / Q000378:metabolism; D012867:Skin / Q000378:metabolism*
chemical_list: D011347:Procollagen; D006909:Hydroxyproline