serum c3 and c4 levels have been determined in patients with addisonian pernicious anaemia ( pa ) and megaloblastic anaemia due to vitamin b12 deficiency from other causes , before and after treatment , in order to study the interaction between vitamin b12 deficiency and complement and the role of complement in the pathogenesis of the gastric lesion of pa .
C0229671
serum
C0009498
complement