Figure 1. Tyrosine hydroxylase (TH)-positive and TH-negative neurons in the substantia nigra.
(A) Low-power magnification of the substantia nigra immunostained for TH. In addition to typical TH-positive pigmented neurons, several TH-negative pigmented neurons, which are typical in incidental Lewy body disease, can be seen at low-power magnification and higher-power magnification (B–D). Scale bar = 30 μm (A), 10 μm (B–D).