The workers wore hard hats, gloves, lab coats and safety glasses, but many had bare arms, and none had masks or face shields to prevent swallowing or inhaling the mist of brain tissue.

• 工人们戴着硬帽子、手套、防护镜，穿着实验服，但很多人却是光着膀子，脸部也没有戴任何护罩或面具来防止吸入或是吞入含猪脑组织的粉尘。