Effect of extracts from several sponges of Yucatan Coast on and preliminary chemical investigation of the bioactive extract of () .

In this study, twenty-four organic extracts from six marine sponge species, collected at shallows of Yucatan, Mexico, were evaluated against trophozoites and Vero cells. The dichloromethane and hexane extracts of exhibited the highest antigiardiasic activity (IC = 1.00 and 2.