Figure 2.
Quinine-induced nitric oxide (NO) release [as assessed by 4-amino-5-methylamino-2′,7′-difluorescein (DAF-FM)] is significantly attenuated by U73122, a phospholipase C β2 blocker, which is necessary for T2R-mediated signaling. This attenuation is not observed with incubation with U73343, an inactive analog of U73122 (n = 6–9 cultures). (A) NO release over a period of 5 min, and (B) maximal NO release during that same period. *p < 0.05, **p < 0.01.