Fig. 7: LFA of I223R/H275Y pH1N1 using A4.

a Optical images of A4-based lateral flow systems after detection of I223R/H275Y pH1N1, wt pH1N1, and control sample. b Optical images of A4-based lateral flow systems after detection of I223R/H275Y and wt pH1N1 mixture in nasal fluid and control sample.