Developmental neuron cell death in dystrophic and normal chickens

Barnett, Richard

doi:10.1016/0014-4886(85)90098-6

Cited by 2 publications

(1 citation statement)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This total at E19 was somewhat high compared to all other ages analyzed suggesting an embryonic "overshoot" in the pool of gustatory receptors produced prior to bud maturation, with subsequent bud degeneration until a stable taste bud population evolved. Cell death in the developing nervous system is a well documented phenomenon (e.g., Barnett, 1985;Rubel et al, 1976). In the striped dolphin, the entire perinatal taste bud population disappears before adulthood (Komatsu and Yamasaki, 1980), which represents a kind of phylogenetic cell death.…”

Section: Discussionmentioning

confidence: 99%

Taste bud development in chickens (Gallus gallus domesticus)

Ganchrow

1987

Anat. Rec.

View full text Add to dashboard Cite

Oral epithelium in the anterior mandibular glands region was examined in embryonic, hatchling, and mature chickens to establish the timing of morphologic events during taste bud ontogeny. Hematoxylin-and-eosin-stained sections (10 microns) from 27 Anak (broiler breed) chickens were examined serially, and buds were quantified at 16-20 days of incubation (E) and, posthatch days 1 and 50-60. Taste buds were first recognized at the beginning of E17 as small clusters of cells in the basal epithelium. Only spherical-shaped buds were observed on E17 and E18, and these spherical clusters never penetrated to the surface of the stratified epithelial layer. E19 marked a transitional stage when mature bud features began to emerge: the buds assumed a more elongate shape, several kinds of cells comprising the bud were distinguishable and the first taste pores were observed. During the ensuing embryonic days, buds continued to elongate commensurate with the deepening oral epithelium and by hatching virtually all buds opened to the oral cavity. No marked morphological changes in taste bud structure were observed on the day of hatching and at 50-60 days posthatching. Taste bud numbers increased dramatically during E17 and E18, peaked on E19, and remained relatively constant thereafter. It is concluded that the morphological sequence of taste bud development in chickens is similar to that in mammals. The timing of bud ontogeny, though initiated only during the third trimester in ovo, essentially is completed by hatching, thus providing the precocial hatchling with the sensory apparatus essential for gustatory experience.

show abstract

Section: Discussionmentioning

confidence: 99%