Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Schematic representation of the drosophila visual system, including the retina and optic neuropils: lamina, medulla, lobula, and lobula plate. Photoreceptors R1–R6 (blue bars) innervate the lamina, and R7–R8 (yellow bars) innervate the medulla. Green, red and blue cells represent lamina neuron, various medullary neurons, and glial cell types, respectively.
