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Keratins in Malayan pangolins vary by region, suggesting scales evolved from the tail towards the head.

Reptile scales help us understand the evolution of skin features like hair and feathers.

Feathers become harder as they develop due to a change in keratin type.

Bird scales evolved from feathers, not reptile scales.

The method accurately measures hair growth with minimal risk and is better than other methods.

Hair varies in size and features depending on body region.

Hair length and thickness are related, with thickness peaking at about a quarter of the hair's maximum length.

Domestic cat hair varies in thickness and length, with guard hairs being longest and thickest, and all hair types mainly contain keratin.

The model shows that factors like follicle shape and stiffness are key for hair growth and anchoring.

A new reliable scale improves accuracy in measuring hair density and treatment response.

Chemical treatments can change the scale heights of wool and cashmere fibers, affecting their identification.

Hair growth after depilation increases skin thickness, mast cell counts, and cell activity.

Glyceride levels in mouse skin are higher during hair growth.

The method accurately measures hair growth with minimal risk and is better than other techniques.

Lizards can regrow their tail scales with the same structure, distribution, and gender-specific features as the original ones, and this unique ability is not seen in adult mammals.

Scaffoldin helps form hard skin structures in chicken embryos.

A scale was made to measure hair loss severity in African American women.

The study identifies the pheromone gland's location and structure in Endoclita vietnamensis, aiding future pest control methods.

CARB is a strong barrier in human hair that prevents dye penetration.

Scalp hair grows at 0.37 mm/day, forearm hair at 0.18 mm/day, and thigh hair at 0.30 mm/day, with no significant differences found in people with certain hair conditions.

Hairless USP mice have enlarged skin cysts as they age.

The southern elephant seal's skin layer helps waterproof the skin by being tightly connected to hair shafts.

The study maps how genes are regulated during mouse hair growth.

Hairy elbows may be linked to short stature, but the exact cause is unclear.

Glycosaminoglycan levels peak early in hair growth and decrease as the cycle progresses.

Hair growth stages don't significantly change lipid content in mouse skin.

cDermo-1 causes dense skin, feathers, and scales in chickens.

The phototrichogram is better for measuring hair thickness.

The Trichoscopy Derived Sinclair Scale offers a more accurate and reliable way to measure hair loss severity than the traditional visual method.