But the transplanted cells fell short of differentiation--the ultimate quest--and failed to become functional retinal cells.

Primarily, his study focusses on the clinical applications of human embryonic stem cell-derived retinal cells, artificial blood and cardiovascular cells.

Pineal cytostructure seems to have evolutionary similarities to the retinal cells of chordates.

It was first identified in a screen for genes upregulated by in developing retinal cells in response to taurine.

Therefore, the retinal cells must obtain nutrients via diffusion through the choroid and from the vitreous humor.

Biometric technologies include fingerprint, facial recognition, iris recognition, retinal scan, voice, and hand geometry.

At the top of the escalator she uses a fingerprint and retinal scan to enter a lobby and walks over to the elevators.

Students can learn about retinal scans, through-wall radar imaging, computer encryption and infra-red intruder detection - all used in the security industry.

Fingerprints, along with other biometric identifiers, such as retinal scans, have gained ground in commercial and consumer settings.

Other biometric methods such as retinal scans are promising, but have shown themselves to be easily spoofable in practice.