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,
What I Do the Best Grand on his 1998 debut album "Famous First Words". As listed in liner notes. What I Do the Best What I Do the Best is the fourth studio album by American country music artist John Michael Montgomery. The tracks "Ain't Got Nothin' on Us", "Friends", "How Was I to Know" and "I Miss You a Little" were all released as singles, peaking at #15, #2, #2 and #6, respectively on the Hot Country Songs charts, making this the first album of his career not to produce a #1 hit. The album was certified platinum by the RIAA for one million