WebA paper describing this work, “The Morphogenesis of Feathers,” au-thored by principal investigator and pathology professor Cheng-Ming Chuong and … Chickens at 2–3 weeks of age were anaesthetized with ketamine (50 mg per kg body mass). Primary remiges I to VII were used because of their large size, distinct morphology and identity. Normally, feathers will regenerate and grow out of the follicles at about 14 days after plucking. Regenerated … See more Specific pathogen-free, fertilized white leghorn chicken eggs were purchased from Charles River SPAFAS. The eggs were incubated at 38 … See more Paraffin sections (5 µm) were stained with haematoxylin and eosin or prepared for in situ hybridization following routine procedures26. Cryostat sections (10 µm) were stained with X … See more

Skin transcriptome reveals the dynamic changes in the Wnt

WebSep 10, 2016 · Feathers are corneous microramifications of variable complexity derived from the morphogenesis of barb ridges. Histological and ultrastructural analyses on developing and regenerating feathers clarify the three-dimensional organization of … WebJan 17, 2006 · The feather has a follicular structure with the dermal papilla (DP) at its base (9–11).The feather filament is a cylindrical structure with mesenchymal pulp inside (Fig. 1b).Moving up the feather shaft from the proximal to the distal end, there are the collar (where cells actively proliferate), the ramogenic zone (where barb ridges start to form), … roger winn obituary

Hair, feathers, and scales: An evolutionary tale

WebCoupled with findings on extant feather morphogenesis, known fossil RDFs were categorized into three morphotypes based on their rachidial configurations. For each … WebCoupled with findings on extant feather morphogenesis, known fossil RDFs were categorized into three morphotypes based on their rachidial configurations. For each morphotype, potential developmental scenarios were depicted by referring to the rachidial development in chickens, and relative stiffness of each morphotype was estimated … WebJan 19, 2024 · Avian species have a unique integument covered with feathers. Skin morphogenesis is a successive and complex process. To date, most studies have focused on a single developmental point or stage. Fewer studies have focused on whole transcriptomes based on the time-course of embryo integument development. To analyze … our reciep roots flat rock