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. Author manuscript; available in PMC: 2015 Jul 14.
Published in final edited form as: J Nucl Med. 2014 Dec 18;56(1):76–81. doi: 10.2967/jnumed.114.146381

FIGURE 2.

FIGURE 2

Immunohistochemical staining for iNOS (green) in cells obtained by BAL in endotoxin-challenged airway. Only 1 individual had negative iNOS staining (iNOS (−)). iNOS (+) image is representative of positive staining results obtained on BAL cells from 6 volunteers. Neutrophils (white arrowheads) and macrophages (yellow arrowheads) were identified by nuclear morphology from 4′,6-diamidino-2-phenylindole staining (blue). Images taken at ×20 magnification.