0 the layer between the retina and the outer white covering of the eye, that contains blood vessels and pigment (= substance giving colour)
1 resembling the chorion (= the outer membrane of the sac around the developing foetus)
This is because, as photoreceptors die, their consumption of oxygen diffusing from the choroid decreases, and oxygen levels in outer retina should rise.
The retina and choroid were carefully removed from the posterior segment, separated, and immediately cooled in liquid nitrogen.
It is possible that different signals modulate growth of the choroid and sclera.
The retina was carefully removed from the choroid and sclera during the initial stages of fixation.
The choroid plexus is a soft tissue and easily affected by external pressure.
Nitric oxide synthase-containing cells in the retina, pigmented epithelium, choroid, and sclera of the chick eye.
Following euthanasia of the animal, isolated eyecups were cleaned of vitreous and the neural retina isolated from choroid and pigment epithelium.
The evidence for visually guided regulation of eye growth is beyond refute, the choroid and sclera being the two principal targets.
