Anaphylactic reaction after injection of vitamin B12.
D000368:Aged; D000707:Anaphylaxis / Q000139:chemically induced*; D000752:Anemia, Pernicious / Q000188:drug therapy; D006801:Humans; D006879:Hydroxocobalamin / Q000009:adverse effects; D007273:Injections, Intramuscular / Q000009:adverse effects; D008297:Male; D012882:Skin Tests; D014805:Vitamin B 12 / Q000009:adverse effects*
D014805:Vitamin B 12; D006879:Hydroxocobalamin