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. Author manuscript; available in PMC: 2015 Nov 1.
Published in final edited form as: Gastroenterology. 2014 Jul 18;147(5):1055–1063.e8. doi: 10.1053/j.gastro.2014.07.020

Figure 1.

Figure 1

Application of phosphorescence oximetry to intestinal oxygen measurements. A) Intestinal oxygen measurements by phosphorescence quenching (the scheme does not represent correct proportions of physical dimensions). B) Phosphorescence decays typically observed in tissue (Oxyphor G4) and intraluminal (OxyphorMicro) oxygen measurements. C) Structure, optical absorption, and phosphorescence spectra of Pt tetrabenzoporphyrin used as an oxygen sensing element in both Oxyphor G4 and OxyphorMicro. D) Calibration curves for Oxyphor G4 in physiological saline and OxyphorMicro directly in mouse fecal material at 36.5°C. Data for OxyphorMicro are a superposition of several animal samples.