Methyl-B 12 is absorbed by an intestinal mechanism using intrinsic factor and by a diffusion process in which approximately 1% of the oral dose is absorbed. The human physiology of vitamin B 12 is complex, and therefore is prone to mishaps leading to vitamin B12 deficiency.ecause intrinsic factor is crucial for the normal absorption of B 12, its lack in pernicious anemia causes a vitamin B12 deficiency. Many other subtler kinds of vitamin B 12 deficiency and their biochemical effects have since been elucidated.
Gail Levin, âEdward Hopperâs Nighthawks, Surrealism, and the War,â Art Institute of Chicago Museum Studies 22, 2 (1996), pp. 180-95, fig. 1. The Art Institute of Chicago: Twentieth-Century Painting and Sculpture, selected by James N. Wood and Teri J. Edelstein (Art Institute of Chicago, 1996), p. 85, ill.
Night CafÃ© by Van Gogh was painted in September 1888 while he was living in Arles. Earlier in the year he had moved to a room at the CafÃ© de la Gare, where the room depicted in this painting was.