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Steroid (35) was found in the mycelium of pathogenic fungus Fusarium roseum (a); steroid (37) was isolated from a marine sponge Topsentia sp. (b); steroid (38) is a metabolite from the giant jellyfish Nemopilema nomurai (c); and steroid (39) is produced by an endophytic fungus, Diaporthe sp., which inhabits leaves of the Chinese medicinal plant Mahonia fortunei (d).
