Frederick Banting upon the idea of obtaining insulin from the fetal pancreas. He removed the pancreases from fetal calves at a William Davies slaughterhouse and found the extracts to be just as potent as those extracted from the dog pancreases. By December 1921, he had also succeeded in extracting insulin from the adult pancreas. Pork and beef would remain the primary commercial sources of insulin until they were replaced by genetically-engineered bacteria in the late 20th century. In spring of 1922, Banting established a private practice in Toronto and began to treat diabetic patients. His first American patient was Elizabeth Hughes Gossett,
Kolej MARA Banting to differentiate the college from the other MARA Junior Science Colleges and appropriately reflect the pre-university student body. The IB diploma depicts the name MARA College Banting in the transcript. The college has 94 lecturers with 41 support staff running day-to-day activities. Since May 2003, MARA College Banting has become a full-fledged 'IB World School'. Previously, MARA College Banting offered other pre-university programmes such as GCE A-Level and Matriculation but now only the IB programme. The college campus is in Bukit Changgang, Selangor, near Kuala Lumpur International Airport and Putrajaya. Students sit for their IB examination in May. Among the