title: Marine sterols with a new pattern of side-chain alkylation from the sponge Aplysina (equals Verongia) aerophoba.
mesh_terms: D000478:Alkylation; D000818:Animals; D002784:Cholesterol / Q000302:isolation & purification; D011161:Porifera / Q000032:analysis*; D013261:Sterols / Q000302:isolation & purification*
chemical_list: D013261:Sterols; D002784:Cholesterol