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Fig. 2. Immunohistochemical localization of G{alpha}o, G{alpha}i2 and G{alpha}q/11 to the microvillar surface of the vomeronasal organ. (A) A section stained with normal rabbit serum. (B) Section stained with a 250-fold dilution of antiserum against G{alpha}o. (C) Section stained with a 250-fold dilution of antiserum against G{alpha}i2. (D) Section stained with a 250-fold dilution of antiserum against G{alpha}q/11. Note the presence of staining within the neuroepithelium (arrowheads) for all G-protein antibodies (G{alpha}o, G{alpha}i2 and G{alpha}q/11). Scale bar, 100 µm. VNE, vomeronasal neuroepithelium.