Timing and Distribution of Mitotic Activity in the Retina During Precocial and Altricial Modes of Avian Development.

ABSTRACT: During development of the vertebrate retina, mitotic activity is defined as apical when is located at the external surface of the neuroepithelium or as non-apical when is found in more internal regions. Apical mitoses give rise to all retinal cell types. Non-apical mitoses are linked to committed horizontal cell precursors that subsequently migrate vitreo-sclerally, reaching their final position in the outer surface of the inner nuclear layer, where they differentiate. Previous studies have suggested differences in the timing of retinal maturation between altricial and precocial bird species. In the present study we analyze qualitatively and quantitatively the mitotic activity in the developing retina of an altricial (zebra finch, Taeniopygia guttata) and a precocial (Japanese quail

SUBMITTER: Alvarez-Hernan G 

PROVIDER: S-EPMC9125163 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature