Figure 1.

Immunohistochemistry images demonstrating serum binding of patient #6 and patient #9 to monkey brain cerebellum. Immunostaining following incubation of patient’s #6 serum and patient’s #9 serum on monkey brain cerebellum shows: granular and Purkinje neurons (A), with dot-blot analysis exhibiting anti-Hu antibodies, and Purkinje neurons (B), with dot-blot analysis exhibiting anti-Yo antibodies.