Fig. 4: Serine sensing System for tracking treatment of a patient with AD.
From: An epidermal serine sensing system for skin healthcare
a Filaggrin gene mutation in the pathogenesis of AD. b Photographs of the AD patient using the system to measure the epidermal serine level after his lesion skin area recovered. c Optical images and corresponding magnified photographs of lesion areas in the AD patient at different stages of treatment. Erythema and flakes are highlighted in these images. d Sensor-measured response currents in the lesion and normal areas. e Histogram of epidermal serine levels in the lesion and normal areas at different medication timepoints. f Epidermal serine levels measured by the system versus AAs obtained by a commercial colorimetric assay kit. The line represents the linear-fitted trendline.
