Figure 6.

 Tracings of electron paramagnetic resonance spectra in the mucosal and muscular layers of the rat stomach. The experimental conditions were similar to those described in fig 3 ▶. Samples resected from the gastro-oesophageal (GO) junction and the distal stomach were separated into mucosal and muscular layers, respectively. (A–D) 1 mM nitrite administeration; (E–H) control. (A, B, E, F) GO junction; (C, D, G, H) distal stomach. (A, C, E, G) Mucosal layer; (B, D, F, H) muscular layer. Instrument settings were similar to those in fig 3 ▶.