Grand Lake St. Marys State Park
... that microcystins in the polluted water of the lake at Grand Lake St. Marys State Park in Ohio can cause severe gastrointestinal ailments in humans?
... that <a href="./Microcystin" id="mwCCg" rel="mw:WikiLink" title="Microcystin">microcystins</a> in the polluted water of the lake at <b id="mwCCk"><a href="./Grand_Lake_St._Marys_State_Park" id="mwCCo" rel="mw:WikiLink" title="Grand Lake St. Marys State Park">Grand Lake St. Marys State Park</a></b> in <a href="./Ohio" id="mwCCs" rel="mw:WikiLink" title="Ohio">Ohio</a> can cause severe <a class="mw-redirect" href="./Human_gastrointestinal_tract" id="mwCCw" rel="mw:WikiLink" title="Human gastrointestinal tract">gastrointestinal</a> ailments in humans?