Crossword clues for the word: ANTISERUM The word ANTISERUM has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for ANTISERUM Showing 1 to 6 of 6 results Clue(s) Counterpoison Immunity provider It provides immunity Pathogen combatant Snakebite treatment Worker is getting drug, unusual treatment against disease