has part has part has quality has quality in taxon fibrillar collagen Nematoda collagenous cuticle collagen and cuticulin-based cuticle nematode cuticle A type of cuticle composed of highly cross-linked collagens and specialised insoluble proteins known as cuticlins, together with glycoproteins and lipids[WP]. UBERON:0003049 currently restricted to nematodes, but this may be too strict WBbt:0005755