Immunologist Jonas WSJ Crossword Clue
Crossword Answer
Click ? to reveal letters one by one before showing the full answer.
Need a Hint? Try Solving It Yourself First
Use our Hints & Tips to uncover the answer.
Hint 1
hintHint 2
meaningHint 3
explanationFrequently Asked Questions About This Clue
The most common and recent 4-letter answer for "Immunologist Jonas" is SALK.
The clue refers to Jonas Salk, the renowned American medical researcher and virologist who developed the first successful polio vaccine.
This clue was last seen in the WSJ Crossword on May 29, 2026.
Salk is the surname of Jonas Salk, the scientist who developed the first effective polio vaccine.
polio vaccine developer
The clue “Immunologist Jonas” is a classic crossword staple, frequently appearing in puzzles like the WSJ crossword. For the puzzle dated May 29 2026, the definitive 4-letter answer is: SALK.
Expert Tip: When you’re stuck, try to analyze the structure of the clue itself. Is it a direct definition, a pun, a fill-in-the-blank, or a pop culture reference? Identifying the type of clue you’re dealing with is a key skill for improving your solving speed.
Finished the WSJ Puzzle? Check out this link for future puzzles:
Play the Official Game