Fig. 2
Our newly proposed “nuclear receptor pyramid” model in humans and mice constructed based on the number of variety of nuclear receptors expressed in tissues. n: the number of highly expressed nuclear receptors. Based on the numbers of NRs expressed in tissues, we classified tissues examined into three categories: high variety (expressed NRs n ≥ 10; n = numbers of the highly expressed NRs), moderate variety (expressed NRs 5 ≤ n < 10), and low variety (expressed 4 ≤ n) in a new nuclear receptor pyramid model in humans and high variety (expressed NRs n ≥ 7; n = numbers of the highly expressed NRs), moderate variety (expressed NRs 3 ≤ n < 7), and low variety (expressed NRs n < 3) in a new nuclear receptor pyramid model in mice