Fig. 7.

Steady-state levels of multiple mouse Tas2r bitterant receptor family members are lower upon constitutive RGS21 loss relative to wild-type C57Bl/6J mice. Representative immunoblots of CV papillae tissue from multiple Rgs21-null mice and wild-type (WT) littermate controls are presented underneath bar-graphs summarizing accumulated quantitative densitometry data from multiple immunoblotting experiments, normalized to GAPDH level detection (numbers of animals sampled [“n”] indicated within each bar). Relative mobility (kDa values on right side of immunoblot examples) was identified by comigrating protein standards on SDS–PAGE. Data analyzed by unpaired Student t tests (*, P < 0.05; **, P < 0.01; ***, P < 0.001; ns, not significant [P >> 0.05]).