title: Orchispirium heterovitellatum: chemical nature of the eggshell.
mesh_terms: D000818:Animals; D004549:Elastin / Q000032:analysis*; D005260:Female; D007633:Keratins / Q000032:analysis; D010063:Ovum / Q000032:analysis*; D013194:Staining and Labeling; D014200:Trematoda
chemical_list: D007633:Keratins; D004549:Elastin