What is the answer to the WSJ Crossword clue "Basis of some vaccines" from May 9, 2026?

Crossword clue

“Basis of some vaccines”

This clue appeared as 95-Across in the WSJ Crossword on Saturday, May 9, 2026. The answer has 3 letters.

Answer · 3 lettersFirst appearance

RNA

Letters3

Starts withR

Ends withA

Vowels1

Where this clue has appeared

WSJ Crossword
May 9, 20263 letters→

About this clue

The clue “Basis of some vaccines” ran in the WSJ Crossword on May 9, 2026 as 95-Across. Its answer is a 3-letter word that starts with R and ends with A.

See every answer from the puzzle on the WSJ Crossword page for May 9, 2026, or learn how clues like this work in our guide to crossword clue types.

More clues from this puzzle

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FAQ

What is the answer to the “Basis of some vaccines” clue?+

The answer is RNA (3 letters), from the WSJ Crossword of May 9, 2026.

Where has this clue appeared?+

We have seen it 1 time in the WSJ Crossword.

How do I find other WSJ Crossword answers?+

Open the full list of answers for May 9, 2026, or browse every date on the WSJ Crossword hub.