||P.84 right column bottom paragraph: "As monoclonal antibodies raised against the myeloid FcγRs, FcγRI, FcγRII, FcγRIII, have become available, a number of immunohistochemical studies have been performed on the placenta. The results of these studies on human term placenta are summarized (Table 2, Fig. 2). In these studies, careful evaluation of control staining has been done, because the affinity between
immunoglobulins and their specific antigens is usually 10^4–10^7 mol/l, which is equivalent to the affinity of placental FcγRs for IgG."