Supplementary Figure 1.

Traces of injectors in stained brain sections. A. Traces of the cannula guide (CG) and the injectors (I) used for repeated injections of EndoN in the MBH. Injectors were inserted at −5.6 mm below the skull surface. Note that the permanent cannula guide was shorter than the injectors to minimize injury. The injectors were labeled with DiI (in yellow) to visualize their traces. Slides were stained with DAPI (in blue) to reveal nuclei. B. Traces of the nanofil (NF) used for single injection of lentiviral particles in the MBH. Nanofil was inserted at −5.6 mm below the skull surface. Slides were stained with DAPI (in blue) to reveal nuclei.