Reconstitution
Each vial, when reconstituted with 50 µl of sterile distilled water, contains 10 µg of tetanus toxin C-fragment in 0.01 M sodium phosphate, pH 7.5. To aid recovery, 0.1% albumin may be added.
Application
The C terminal binding portion of tetanus toxin is not toxic but is taken up by pre-synaptic nerve terminals and exhibits trans-synaptic retrograde transport in central neurons similar to that of tetanus toxin. It is used to map neuronal connections and to target proteins to neurons.