from cancer chemotherapy . It has a history of usage as a blood doping agent in endurance sports such as bicycle racing , triathlons and marathon running.        #3 MICROCYSTIN – Cas No: [101043-37-2]  – PH-5611A– 96% min  –Commercial Qty /  $593,000/gram 1mg total $593.8   http://en.wikipedia.org/wiki/Microcystin “They are