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Cat claws stay sharp by shedding their outer layer through microcracks formed during activities.

Hard skin features like scales, feathers, and hair evolved through specific protein changes in different animal groups.

Animals that change color with the seasons mainly do so in response to daylight changes, but climate change is causing camouflage problems that may require evolutionary changes.

Different fish use the same genes to regrow teeth.

Different species use the same genes for tooth regeneration.

Different ectodermal organs like hair and feathers regenerate differently, with specific stem cells and signals involved in their growth and response to the environment.

Skin problems can be caused or worsened by physical forces and pressure on the skin.

Hair in mammals likely evolved from glandular structures, not scales.

Researchers found a genetic link for hereditary hair loss but need more analysis to identify the exact gene.

The document explains various skin conditions and their treatments.

The research found specific genes that may cause longer hair in Tianzhu White Yak.

Different hair types in mammals are linked to variations in specific protein genes, with changes influenced by their living environments.

Doctors should use a detailed patient history and physical exam to diagnose joint pain, and consult a rheumatologist early for suspected autoimmune diseases.

Cows moving from tie-stall to free-stall housing had more heel problems, less joint lesions, and higher stress levels.

Mice with more Flightless I protein grew back their claws better after amputation.

The conclusion is that teeth, hair, and claws have similar stem cell niches, which are important for growth and repair, and more research is needed on their regulation and potential markers.

The conclusion is that many small genetic variations influence claw disorders in cows, and using genomic selection could help reduce these disorders.

Transglutaminase activity is important for skin and is found in both mammals and birds.

Cows moving from tie-stalls to free-stalls had fewer leg injuries but more stress and heel horn erosions.

Modulating BMP activity changes the number, size, shape, and type of ectodermal organs.

Mice without certain skin proteins had abnormal skin and hair development.

Epidermolysis bullosa is a genetic disease causing fragile skin and blisters in both animals and humans.

Helianthus annuus and Martynia annua seed oils significantly promote hair growth.

Allergic cats with yeast overgrowth improved with antifungal treatment.

A new skin disease in four Labrador retrievers responded well to immunosuppressive treatment.

Effective treatment significantly improves pododermatitis in dogs, reducing symptoms and extending remission.

The document concludes that understanding how hair follicles naturally die and regenerate is important for insights into organ development and could impact health and disease treatment.

The kitten's skin infection was cured with medication in three weeks.

Hair and nail cells share similar proteins, indicating a common differentiation pathway.

Platelet-rich plasma might help with hair growth and skin conditions, but more research is needed to prove its effectiveness and safety.