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. 2022 Dec 5;25(1):47. doi: 10.3892/etm.2022.11746

Figure 4.

Figure 4

Illustration of how current micro-needle diagnostic platforms work. Micro-needle diagnostic platforms extract or detect target biofluid using (A) hollow micro-needles, (B) solid micro-needles, (C) analyte capture through specific target analyte or (D) electrochemical sensing.