Antipernicious Anemia Factor -

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Antipernicious Anemia Factor -

In the 19th and early 20th centuries, patients diagnosed with "pernicious" (meaning deadly) anemia faced a grim prognosis.

Hearing of this, Boston physicians George Minot and William Murphy decided to try feeding raw liver to human patients dying of pernicious anemia. To everyone's astonishment, patients forced to consume about a half-pound of raw liver daily made complete recoveries. Whipple, Minot, and Murphy shared the for this discovery. 2. Extrinsic vs. Intrinsic Factors

In 1930, researcher William Castle conducted clever experiments feeding patients predigested meat and gastric juices. He deduced that a normal stomach secretes an that must bind with an "Extrinsic Factor" (the antipernicious anemia factor in food) to allow the body to absorb it. Patients with pernicious anemia, he discovered, lacked this intrinsic factor due to stomach atrophy. 3. Isolation of Vitamin B12 (1948) Pernicious anemia: MedlinePlus Medical Encyclopedia


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In the 19th and early 20th centuries, patients diagnosed with "pernicious" (meaning deadly) anemia faced a grim prognosis.

Hearing of this, Boston physicians George Minot and William Murphy decided to try feeding raw liver to human patients dying of pernicious anemia. To everyone's astonishment, patients forced to consume about a half-pound of raw liver daily made complete recoveries. Whipple, Minot, and Murphy shared the for this discovery. 2. Extrinsic vs. Intrinsic Factors

In 1930, researcher William Castle conducted clever experiments feeding patients predigested meat and gastric juices. He deduced that a normal stomach secretes an that must bind with an "Extrinsic Factor" (the antipernicious anemia factor in food) to allow the body to absorb it. Patients with pernicious anemia, he discovered, lacked this intrinsic factor due to stomach atrophy. 3. Isolation of Vitamin B12 (1948) Pernicious anemia: MedlinePlus Medical Encyclopedia