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Aged Julia Creek dunnarts suffer from reproductive and hormonal issues, aiding conservation efforts.

Fish teeth and taste bud densities are linked and can change between types due to shared genetic and molecular factors.

Mouse Scube3 affects teeth, tongue, vibrissae, and eye development, but not facial structure or limb growth.

Sweat gland development involves two unique skin cell programs and a temporary skin environment.

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

Rat vibrissae have sensory terminals with specific structures that help detect hair movements.

Males and females differ in lifespan, growth, organ size, metabolism, and brain structure, with females generally living longer and maturing earlier.

Integumentary organs adapt and evolve for survival, with potential uses in regenerative medicine.

Pangolins have lost some skin-related genes, but kept others, showing complex skin evolution.

Hair medullary cells in mammals vary in complexity, with humans having more structured cells similar to inner root sheath cells.

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

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

Calcium signals and SHH guide the direction of feather growth in chicken skin.

Pregnancy and nursing increase certain brain activities in rats, but these changes disappear when the babies are taken away.

Feather growth and regeneration involve complex patterns, stem cells, and evolutionary insights.

The pituitary gland is crucial for normal mink fur cycles.

People with Down's syndrome are more likely to have syringomas.

FoxA is crucial for planarian pharynx regeneration.

Ectodin integrates BMP, SHH, and FGF signals in developing ectodermal organs.

Trichoblastomas in aged house musk shrews show unique features and may involve serum amyloid A in inflammation.

Cellular flows and tissue mechanics guide feather follicle formation in birds.

Both genetic and hormonal factors are crucial for bird sex differentiation, and disturbances can cause sex reversal.

The improved genome of the African spiny mouse helps study its tissue regeneration.

During late pregnancy in rats, hormonal changes increased certain GABAA receptors in specific brain cells.

Feathers are crucial for understanding bird evolution, development, and have inspired biomimetic research.

The interdigital gland in crossbred sheep is similar to skin and has specialized structures for secretion.

Cats can have hypersomatotropism without diabetes, suggesting current diagnosis methods may miss cases.