Abstract:The concentration of vitamin B12 in blood serum and its excretion in the urine were assayed by the E. coli mutant technic in two patients after total gastrectomy and by use of the more sensitive Euglena gracilis method in four cases of pernicious anemia in relapse and 1 case of well controlled nutritional macrocytic anemia.
Following parenteral administration of 100 µg. vitamin B12 intramuscularly to two patients with total gastrectomy, much higher blood levels were observed within the first few… Show more
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