In silico analysis of E2 enzymes. A The digital PCR (heatmap) depicts the average transcripts per million (TPM) value per tissue per gene from the indicated human and mouse RNAseq datasets. White = 0 TPM, Black = maximum TPM value for that gene across all tissues in that species. GAPDH and Eif3l are included as references. B Bar graphs of the testis and germ cell dataset average TPM values depicted in A. The number of replicates per sample are as described in Robertson et al.