Tyrosine nitration of eosinophil granule toxins is mediated by EPO in
the presence of H2O2 and a nitrite source.
Fluorescence micrographs of eosinophils from a wild type mouse (A)
and an interleukin 5-transgenic, homozygous null EPO (EPO-/-) mouse
(B), from an otherwise healthy human individual (C) and a
CGD patient stained for 3NT, green; MBP, red; and DAPI,
blue (D) Original magnification: ×1000.