The clue "Immune response trigger" last appeared in the LA Times crossword on May 14, 2025. The correct answer for this puzzle is "ANTIGEN", a 7-letter word.
Solution ANTIGEN is 7 letters long. So far we haven´t got a solution of the same word length.
There is 1 solutions. The longest is ANTIGEN with 7 letters, and the shortest is ANTIGEN with 7 letters.
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The solution is 7 letters long.