Fig. 2.

a Autofluorescence of unstained formalin-fixed, paraffin-embedded murine kidney slices upon excitation with wavelengths of 647 nm, 561 nm, and 488 nm, respectively. b Intensities of × 100 magnified areas inside glomeruli at administration of either NaBH₄, glycine, trypan blue (TB) or LED. n ≥ 12