Feσ RECEPTORS IN HUMAN CHOROID PLEXUS

Abstract
Cryostat sections of human choroid plexus adsorbed erythrocytes sensitized with IgG antibodies of human and rabbit origin. No adsorption occurred when the erythrocytes were sensitized with F(ab')2or Facb fragments. The reaction was strongly inhibited by intact IgG and by Fc fragments and not inhibited by Facb and F(ab')2 or albumin. These properties are similar to those of corresponding receptors in human placenta. The presence of an Fey receptor in choroid plexus may be of significance for the transfer of IgG from blood to cerebrospinal fluid.