<p>(A) In the CvP, <i>GNA14</i> was expressed in a much smaller population of TRCs than <i>GNAT3</i> and in a mutually exclusive manner. The <i>GNA14</i>–positive TRCs were distinct from those expressing <i>TAS1R2</i> and <i>TAS2R13</i>, but they were subsets of the <i>TAS1R3</i>-positive TRCs and partially overlapped with the <i>TAS1R1</i>-positive TRCs. n ≥1 (numbers of sections ≥2). (B) In the CvP, <i>TAS1R2</i> and <i>TAS2R13</i> were expressed in subsets of the <i>GNAT3</i>–positive TRCs, which partially overlapped with the <i>TAS1R1</i>- and <i>TAS1R3</i>-positive TRCs. n ≥2 (numbers of sections ≥4). (C) In the FuP, <i>TAS1R1</i>, <i>TAS1R2</i>, <i>TAS1R3</i>, and <i>TAS2R13</i> were expressed in subsets of <i>GNAT3</i>-positive TRCs. n ≥1 (numbers of sections ≥10). (D) Venn diagram illustrating the co-expression relationships among taste receptors and signal transduction molecules in the macaque and the mouse. Scale bars: 50 µm.</p