The glycolipid monosialoganglioside ,GM1 is normally abundant in neuron membranes of the brain. It is thought that they modulate the self repair by damaged neurons. GM1 extracted from cattle is now being tested in a double blind follow-up at Hahnemann University in Philadelphia. I am a volunteer participating in this study.For more information try [215] 782-3066. Sam Kalkstein {215} 848 -8922 53 E. Logan St. Philadelphia, Pa.