This page lists every known solution for the clue “Immune Response Trigger” in Crossword Challenge. Because this clue can appear in different puzzles (levels) with different required answers, we first list all the answers, then show which one appears in each puzzle below.
Immune Response Trigger Crossword Challenge Answers (All Variants)
Antigen
If more than one answer is listed, open your puzzle page below to confirm the one used there.
All Known Answers for Immune Response Trigger Clue
Where This Clue Appears
Last Checked: September 12, 2025