This page lists every known solution for the clue “Immune System Fluid” 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 System Fluid Crossword Challenge Answers (All Variants)
Lymph
If more than one answer is listed, open your puzzle page below to confirm the one used there.
All Known Answers for Immune System Fluid Clue
Puzzle 506 — - Puzzle 647 —
- Puzzle 737 —
Where This Clue Appears
Last Checked: September 12, 2025