This process releases several toxins, including deadly tetanus toxin.

这个过程会释放出几种毒素，包括致命的破伤风毒素。

But by blocking neurotransmitters released by interneurons, tetanus toxin causes uncontrollable muscle contractions and spasms.

但是破伤风毒素通过阻断中间神经元释放的神经递质，会导致无法控制的肌肉收缩和痉挛。

Then, they inject antitoxin to neutralize any tetanus toxin still in the body that has yet to enter the central nervous system.

然后，他们注射抗毒素来中和体内尚未进入中枢神经系统的破伤风毒素。