| metals in bone tissue of antillean manatees from the gulf of mexico and chetumal bay, mexico. | concentrations of seven metals (as, cd, cr, cu, pb, ni, and zn) were analyzed in 33 bone tissue samples of antillean manatees (trichechus manatus manatus) found dead in lagoons and rivers of tabasco and campeche in the gulf of mexico and chetumal bay in the caribbean region. the concentrations of cr, cu, pb, and zn were significantly different between regions, with greater levels found in the gulf of mexico group than in the mexican caribbean group (p < 0.05). pb concentrations differed signific ... | 2016 | 26519079 |