Crossword Genius

DNA sample collector (4)

Ross

I believe the answer is:

swab

'dna sample collector' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for swab that I've seen before include "Hospital cleaner" , "Cloth for cleaning wounds" , "Clean (a wound)" , "Cleaning implement" , "Specimen" .)

I've seen this clue in the Universal.
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