Extended Data Fig. 2: R8s contain histamine.
From: A single photoreceptor splits perception and entrainment by cotransmission
a, Histamine in compound eyes. Top, anti-LOVIT staining in the medulla; bottom, GFP expression by Hdc-Gal4 in the medulla. R8s terminate in the medullar layers of M1-M3, and R7s in M1-M6. GMR-LexA labeled all eye photoreceptors. b, R8s contain histamine. Top, anti-LOVIT staining; bottom, HDC expression. c, No ACh, glutamate, dopamine, and GABA in R1-R7 photoreceptors. d, No glutamate, dopamine, serotonin, and GABA in R8s.
