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Related Clues:
- Key part of the immune system
- Immunity agent
- Certain lymphocyte
- Immune-system unit
- Immunity offerer
- Immune response component
- Neutralizer of a sort
- Serum neutralising poisons
- It neutralises poison in the body
- Immune system defender
- Treatment for poison given soldier, one sounding alarm
- A new container holding Italian animal's special serum
- Serum obtained from a bird injected into retired president
- Serum found in meat in a new tin can
- An avian creature and bovine in treatment for snakebites?