Immune Protein Fighting Infections, Found in Blood

This page is the CodyCross answer for the clue below from World of Books, Group 296, Puzzle 1 (Stephen King).

Question is: Immune Protein Fighting Infections, Found in Blood

and the answer is: ANTIBODY

Word Meaning:

ANTIBODY — (immunology) A protein produced by B-lymphocytes that binds to a specific antigen.

Definitions from Wiktionary.

Immune protein fighting infections, found in blood — CodyCross Answer | CodyCross Solutions