title: Steroid biosynthesis in the whelk, Buccinum undatum.
mesh_terms: D000818:Animals; D002784:Cholesterol / Q000096:biosynthesis; D004064:Digestive System / Q000378:metabolism; D007810:Lanosterol / Q000378:metabolism; D009132:Muscles / Q000378:metabolism; D009928:Organ Specificity; D012908:Snails / Q000378:metabolism*; D013261:Sterols / Q000096:biosynthesis* / Q000378:metabolism
chemical_list: D013261:Sterols; D007810:Lanosterol; D002784:Cholesterol