Related Clues:
- Protective lymphocyte
- Virus fighter in botany I'd modified
- Penning notes on passing back, handyman defender
- It can mature in tonsils
- Protective protein
- Immune system part
- Like ultra-spiritual type that offers response to disease?
- Cancer fighter, for short
- Antigen-attacking lymphocyte
- Agent of immunity
- Note organisation going after an internal defender..
- One that may fight complaint from a person wearing tiny pants
- As defence against infection, do any bit ordered
- A blood protein produced by one's immune system to neutralise harmful foreign substances
- Whoever keeps it up for first year one can protect