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Some of the marine invertebrates which show inhibitory activity of pAPN, pAPA, hAPN, and rPfA-M17. (A) Cenchritis muricatus, (B) Nerita versicolor, (C) Lissodendoryx (Lissodendoryx) isodictyalis, (D) Tripneustes ventricosus, (E) Echinaster (Othilia) echinophorus, (F) Isostichopus badionotus, (G) Stichodactyla helianthus, and (H) Bunodosoma granuliferum. Pictures courtesy of Professor José Espinosa, PhD from ICIMAR, CITMA, Cuba.
