After decades of creeping along, carotenoid honest signaling research is moving at warp speed.CYP2J19 & BDH1L localize to ER (not mito) and House Finches do not use CYP2J19. The implications are huge. Paper by @RebeccaEKoch @mbtoomey @YufengZhang7 https://t.co/pzRr4Nmz3F -