Example: biology

Your step-by-step guide for COVID-19 self-testing

place the fabric tip of the swab into the tube so it is in the liquid. Press the tip against the edge of the extraction buffer tube with force, while rotating it around the tube for 30 seconds. x 5. 17. Rotate the swab 5 times while squeezing the side of the tube. This is to transfer your sample into the liquid. 18. Pinch the extraction buffer ...

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  Transfer, Fabric

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