Figure 6
From: Ultraviolet Radiation-Induced Production of Nitric Oxide:A multi-cell and multi-donor analysis

Comparison of sodium nitrite and nitrate in HBSS. (a) Solutions of 10 mM sodium nitrite and sodium nitrate in HBSS were assessed for absorption at wavelengths reaching from UV-C into the infra-red, with an inset expanded view of the UV region. (b) Solutions of 10 mM sodium nitrite and nitrate with increasing doses of UV-A in the presence of DAF-FM. Results are expressed as % change in fluorescence relative to unexposed control.