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. 2021 Jul 27;22(15):8021. doi: 10.3390/ijms22158021

Figure 2.

Figure 2

Schematic illustrating the steps involved in the detection of protein biomarkers in biofluids and their applications in a clinical setting. HAP, high-abundance protein; LAP, low-abundance protein; CTC, circulating tumour cell; ELISA, enzyme-linked immunosorbent assay; EpCAM, epithelial cell adhesion molecule; CK, cytokeratin. * Dynamic range of corresponding biofluid. Created using BioRender.