Have you tried to perform immunohistochemistry/immunofluorescence? You can label only cone-photoreceptors or rod-photoreceptors with specific cone/rod-photoreceptors markers or even a double-immunolabelling to different both at the same time.
Thank you for your response. Antibody staining diffrentiate cones and rods in the photoreceptor layer, but I would like to diffrentiate their nuclei in the outer nuclear layer.
Well, but if you only see cone and rod-photoreceptors in the photoreceptor layer, I think you are only staining their outer segments. If the marker labels all the photoreceptor cell, you have to see the label in the nuclei too, and therefore, in the outer nuclear layer. You can also use DAPI to label every nuclei at the same time you use specific markers of cone and/or rod-photoreceptors.
I don´t know if I have explained it well or if I have misunderstood the question.
use NRL and NR2E3 antibodies for rod photoreceptor nuclei, Rhodopsin, ROM1, Peripherin2/RDS, ABCA4 (ABCR) for rod photoreceptor cytoplasm.
Use antibodies to CAR (cone arrestin), OPN1sw (short-wave cones, S-cone marker), L/M opsin (low-medium wave cones, - rodents, or separate ab's for L, M cones in primates, humans) -cytoplasmic stain antibodies, RxR gamma -cones, TRbeta2 for L/M cones (rodents), L, M cones -humans. I believe this is the answer you were searching for