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

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

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

Understanding proteins in skin structures like claws and hair is crucial for future research.

Scaffoldin helps form hard skin structures in chicken embryos.

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

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

Cysteine-rich keratins evolved independently in mammals, reptiles, and birds for hard skin structures like hair, claws, and feathers.

New treatments targeting specific genes show promise for treating keratin disorders.

A rare gene variant causes hair and nail issues in a family.

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

Trichohyalin-like proteins are essential for the development of skin structures like hair, nails, and feathers.

The skin systems of jawed vertebrates evolved diverse appendages like hair and scales from a common structure over 420 million years ago.

Deleting the Hoxc13 gene in frogs shows its crucial role in developing skin structures similar to hair.

Snakes and worm lizards lost claw proteins due to similar evolutionary changes.

Lizard claws have hair-like keratins similar to those in mammals.

The HoxC gene cluster and its enhancers are essential for developing hair and nails in mammals.

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

The conclusion is that the nuclear lamina and LINC complex in skin cells respond to mechanical signals, affecting gene expression and cell differentiation, which is important for skin health and can impact skin diseases.

Reptile skin protects and prevents water loss, helping them adapt to land.

Mouse nails are similar to human nails, making them useful for studying nail diseases.

Children with darker skin tones can have specific skin conditions that need tailored treatments.

Hair keratins evolved from ancient proteins, diversifying through gene changes, crucial for forming claws and later hair in mammals.

The cornified cell envelope forms a protective barrier in skin and hair, using specific proteins and lipids to maintain effectiveness.

Trichohyalin helps in hair and skin cell structure and function by binding calcium and linking proteins.

Small proline-rich proteins and trichohyalin help make epithelial tissues tougher and more flexible.

Sciellin is a protein that helps form protective layers in skin, hair, and nails.

A wide range of proteins are integrated into the skin's protective layer.

The cornified envelope is crucial for skin's barrier function and involves key proteins and genetic factors.