| element levels in snakes in south carolina: differences between a control site and exposed site on the savannah river site. | levels of 18 elements, including lead, mercury, selenium, and uranium, were examined in three species of snakes from an exposed and reference site on the department of energy's savannah river site in south carolina. we tested the hypotheses that there were no differences as a function of species, and there were no difference between the exposed and control site for blood and muscle (tail) samples for banded water snake (nerodia fasciata), brown water snake (n. taxispilota) and cotton mouth (akis ... | 2006 | 16404533 |