Fig. 6.

a Construction steps of lateral flow test strips for the detection of severe fever with thrombocytopenia syndrome (SFTS) using CDs/SiO₂ nanospheres (CSNs). b Evaluation of results of the immunofluorescent CSNs based test strips. If 2 fluorescence lines show up on the test (T) and control (C) lines, that is a positive result, and negative when only the C line shows up. If only the T line or no line shows up, the test is invalid. c Fluorescence pictures of the test strips for investigation of the quantification of SFTSV nanoparticles. The brightness of the T line decreases with decreasing concentration of SFTSV nanoparticles. d Evaluation of the selectivity of the method where the blank sample of phosphate buffer and other four different antigens were examined on the strip individually. Reprinted with permission from [84]. Copyright 2019 American Chemical Society