Fig. 2: Microfluidic chips for testing.

a A lateral flow device (figure adapted with permission from Turbé et al. ⁷). b A vertical flow device (figure adapted with permission from Ballard et al. ¹⁹). c A microfluidic capillary device (figure adapted with permission from Ghosh et al. ⁴⁷). d A microfluidic finger-pump device (figure adapted with permission from Comina et al. ⁴⁸).