In the examination of human oral and nasal cavity diseases, sample sampling swabs are needed for the collection of oral epidermal cells and nasal virus samples, and the cells and samples are kept in the collection tube and transferred to the chemical examination room for examination. The sampling swab now used is provided with a ring-shaped groove on the handle, and when using this sampling swab the sampling swab is gently inserted into the oral or nasal cavity, so that the sampling swab is gently rotated 3~5 turns and slowly removed, and the extracted sample is put into the sample collection tube
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