Related Clues:
- Sort of camera on holiday that's used for certain shots
- Get in a fantastic new biological substance
- Biological substance extractable from gentian
- Opposing dope that could help towards fighting infection
- Substance giving immunity from disease
- Immune-system stimulus
- Inclined to withhold information, maybe, for component of medicine?
- ... against information on what delivers immunity
- Protection against a cold reportedly identified
- Antibody stimulator
- Short holiday viewed as sound, healthy preparation
- Inoculant needs a small volume injected into climber
- Opposing knowledge that could help fight infection
- Immunising agent that vice can ruin
- Preparation for inoculations