Tetanus toxin C-fragment from C. tetani is the C-terminal end of tetanus toxin that binds to gangliosides on presynaptic terminals at the neuromuscular junction, allowing tetanus toxin to be taken up into neurons.1Technical InformationFormulationEAch vial, when reconstituted with 50 l of sterile purified water, contains 10 ug of tetanus toxin C-fragment in 0.01 M sodium phosphate, pH 7.5