Kaeny t1_iqo3fa0 wrote
Reply to comment by Yet-Another_Burner in Biosensor detects brain tumors with less than a drop of blood: ultrasensitive biosensor that allow researchers to detect minute amounts of tumor-derived materials into the circulation by giuliomagnifico
Just googled and the biggest physically possible drop of water is 9mm in diameter.
I wonder how small “less than a drop of blood” is
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