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.
Opsin expression in the single cones of the raptor central fovea. Confocal images of retinal cross-sections labeled with antibodies directed to two opsins: SWS1 (violet-sensitive cones; OPN1SW, blue, left column) and Rh2 (green-sensitive cones; Rho4D2, green, right column) of the common buzzard (A, B), Eurasian sparrowhawk (C, D) and peregrine falcon (E, F). DAPI used to counter-stain nuclei is shown in purple. For labeling of retinal layers see legend of figure 2. Scale bars: 50 μm.
