“Proteins hypothetically responsible for mad cow disease” crossword clue

Reveal the answer to see why it works and where this clue has appeared before.PRIONS is the answer to the New York Times crossword clue “Proteins hypothetically responsible for mad cow disease”. It was last seen in the puzzle of March 30, 2025, where it runs at 55 Down and fills 6 squares. It crosses 6 other entries in that grid — those are listed below and are the quickest way to confirm the letters you already have.