Figure 3

TH immunoreactivity in striatum and substantia nigra. Low power photomicrographs of TH immunostaining in the striatum (A-B) and the substantia nigra (C-D) from a rat receiving Wistar MSC. Similar staining was seen in animals receiving ACI MSC and in PBS-treated controls. Note the loss of TH immunoreactivity in the lesioned side (A, C) compared to the unlesioned side (B, D). Arrow indicates the needle track from the injection. Scale bars = 200 μm.