One of the developmental paradigms followed in the retina is the
influence of cells at distinct developmental time points on other cell fate.
This influence is not haphazard; progenitor cells are limited in their targets
(Belliveau and Cepko 1999). Therefore, the development of the retina is
intimately associated with extracellular ligands and their cognate receptors.
Taurine is active in photoreceptor development, but through which
mechanism(s)? I