Intranasal uptake of CTG into the olfactory bulb, choroid plexus, and cortex.

<p>Anesthetized mice received intranasal administration of CTG (6 µl) or vehicle (PBS). Mice remained anesthetized for an additional 20 minutes in a supine position. Five hours later, mice were euthanized and perfused with 4% PFA, and the brains sectioned into 12 µm slices. Nuclei were counterstained with DAPI (Blue). CTG cells are labeled green. No signal was detected in the vehicle treated mice (data not shown).