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Hair growth can be stimulated by combining certain skin cells, which can rejuvenate old cells and cause them to specialize in hair follicle creation.

Both cell and non-cell parts are important for rat whisker follicle regrowth.

Only two of the four keratin genes are expressed in wool fibers.

Field bean supplementation improved mohair growth and kid growth in Angora goats but didn't prevent weight loss after giving birth.

Vertebrate skin evolved to be more specialized and complex, especially in land animals.

Transamidases are present in the epidermis but their exact role is unclear.

Terrestrial vertebrates have balanced keratin gene clusters, unlike teleost fish.

Keratinization in embryos helped vertebrates adapt to land by forming a protective skin barrier.

Healing of heart and skin wounds in animals are similar.

Msx and Dlx genes are crucial for development, controlling cell behaviors like growth and differentiation through their roles as gene regulators.

Cornification evolved from keratinization in vertebrates, with differences between mammals and sauropsids.

Retinoic acid can change skin structures in vertebrates, like turning scales into feathers or hair buds into glands.

Lack or blocking of SRD5a, a key component in hormone creation, can lead to conditions like pseudohermaphrodism and affect hair growth, bone mass, muscle strength, and reproductive health. More research is needed on its regulation from fertilization to adulthood.

Neural stem cells use local feedback to maintain balance in the adult brain.

Lampreys have a functional vitamin D receptor that may help detoxify harmful substances.

COVID-19 and hypopituitarism (reduced pituitary gland function) are linked, with the latter's related health issues potentially worsening COVID-19 outcomes, and COVID-19 possibly increasing risk for pituitary complications.

Becker's Nevus Syndrome is a rare condition with a skin patch and possible bone and muscle abnormalities, treated mainly for appearance.

The patient with Ankylosing Spondylitis had shoulder joint damage and bone changes.

Most vertebrates can regenerate skin, nails, and corneas, but only some can regenerate teeth and lenses.

β-thymosin in invertebrates is more complex and diverse than in vertebrates.

Deer antler regeneration offers insights for human limb regeneration and scar reduction.

Understanding tissue regeneration in animals can improve regenerative medicine.

LHX2 is crucial for development, tissue repair, and preventing diseases.

A 10-month-old boy with a rare combination of genetic conditions has severe immune deficiency and treatment challenges.

Nerves are crucial for the regeneration of various body parts in many animals.

Mammals might fail to regenerate not because they lack the right cells, but because of how cells respond to their surroundings, and changing this environment could enhance regeneration.

Testosterone and its byproducts help support male sexual behavior through different pathways in the brain and body.

Certain drugs change freshwater snail shells to a "banana" shape.

AVT is highly conserved and may have antimicrobial properties.