What is "serums"

Usage examples of "serums".

Adulterated shark repellent, cut antibiotics, condemned parachutes, stale anti-venom, inactive serums and vaccines, leaking lifeboats.

Ehrlich, remembering the bubble of the vaccines of Pasteur which had burst, and the balloon of the serums of Behring which had been pricked.

He brought out the containers of dehydrated rations and the serums and emergency equipment.