Component of some modern vaccines WSJ Crossword Clue

By Date: SEP 20, 2025 Follow on Google

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The most common and recent 3-letter answer for "Component of some modern vaccines" is RNA.

The clue refers to the technology used in some contemporary vaccines, specifically mRNA vaccines like those for COVID-19. RNA, or ribonucleic acid, is a crucial component in these vaccines, which use a piece of genetic code to instruct cells to produce a protein that triggers an immune response.

This clue was last seen in the WSJ Crossword on September 20, 2025.

RNA is a nucleic acid present in all living cells, primarily involved in the synthesis of proteins.

Single-stranded molecule, Messenger molecule in bio class, Molecule with the nucleotides G, U, A and C, Modern vaccine component, Genetic info carrier

The clue “Component of some modern vaccines” is a classic crossword staple, frequently appearing in puzzles like the WSJ crossword. For the puzzle dated September 20 2025, the definitive 3-letter answer is: RNA.

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