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 Kolej MARA Banting Kolej MARA Banting (; abbreviated KMB or MCB; formerly known as "MRSM Banting") is one of the four pre-university colleges operated by MARA. The school is state funded and headed by a director. It is a top-ranked IB world school, scoring above the international average in candidates with 45 IB points and candidates obtaining higher than 42 IB points. MCB is an International Baccalaureate World School since October 1990. Its history began in 1985 when the GCE A-Level programme was introduced in MARA Junior Science College Seremban (MRSM Seremban, now known as Kolej MARA Seremban). To diversify