title: Nature of fibres in Hydra.
mesh_terms: D000818:Animals; D003063:Cnidaria / Q000033:anatomy & histology*; D003094:Collagen; D003238:Connective Tissue / Q000033:anatomy & histology*; D004848:Epithelium; D006651:Histocytochemistry; D009210:Myofibrils
chemical_list: D003094:Collagen