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. Author manuscript; available in PMC: 2009 Nov 1.
Published in final edited form as: Eur J Neurosci. 2008 Nov;28(9):1867–1876. doi: 10.1111/j.1460-9568.2008.06472.x

Figure 4.

Figure 4

Effect of treatments on serum nitrite/nitrate levels as determined by the Greiss reagent assay. Re-exposure to the previously heroin-paired environment (CS, conditioned stimulus) reduced serum levels of nitrite/nitrate and this reduction was attenuated by inactivation of the BLA (A) but not affected by inactivation of the caudate control region (B). The data are expressed as the micromolar concentration of nitrite/nitrate. (*) Asterick indicates a significant difference (p<0.05) from the HC (Home cage), Saline-BLA/Caud group.