Perhaps you might want to read this article about purple pigs, deformed calves and other strange things. Perhaps you might want to ponder about what environmental influences might be a root cause of PD, and you also might want to give to the Pennies for Parkinson's. http://www.healthnet.org/programs/promed-hma/9903/msg00093.html Jerry -- Help us save the horses! Habitat for Horses, Inc. A lifetime home for abused, endangered horses. http://www.habitatforhorses.org/