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Melatonin can increase cashmere yield by altering gene expression and restarting the growth cycle early.

The pituitary gland controls seasonal fur color changes in weasels.

Nipple area expansion in mice needs both pregnancy hormones and mechanical strain.

Androgens in female meerkats influence aggression and dominance, affecting social dynamics and offspring behavior.

The document concludes that sex hormones are crucial for mammalian reproduction, health, and behavior, and require more research for therapeutic use.

Measuring reproductive hormones in brown bear hair could help identify their sex and reproductive state, but better collection methods or lab techniques are needed.

Certain adrenal hormones can strongly stimulate oil gland growth in hamster skin, similar to male hormones.

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

Blocking prolactin increases the activity of secondary hair follicles in cashmere goats.

Skin and hair cells release serotonin and histamine naturally, which could help improve skin health.

Mouse genital development depends on male or female hormones for specific features.

Mouse skin can produce and process serotonin, with variations depending on hair cycle, body location, and mouse strain.

Melatonin improved sheep reproduction, being more beneficial and cost-effective in males.

Male sexual differentiation is regulated independently, while female differentiation occurs in an androgenic environment, affecting conditions like congenital adrenal hyperplasia.

The T-zone on the face has more androgen receptors and produces more oil than the U-zone.

The testes control steroid production through complex interactions involving various cells and signaling molecules.

Melatonin receptor genes likely play an important role in the development of goose feather follicles.

The article concludes that better understanding gene regulation related to seasonal changes can offer insights into the mechanisms of seasonal timing in mammals.

The pituitary gland is crucial for normal mink fur cycles.

Melatonin stimulates the skin components of ram's scrotum during their non-breeding season.

Progesterone reduces anxiety and depression in female mice by increasing BDNF in the brain, needing 5α-reduction and estradiol.

PFOS exposure disrupts hormone levels and enzyme activities in juvenile frogs, affecting males and females differently.

B-type hairs on female butterfly legs help them choose where to lay eggs.

Allopregnanolone affects fear responses differently in male and female rats, possibly explaining sex differences in anxiety disorders.

Changes in prolactin and DHEA levels are not required for the start of mink hair growth cycles.

Neurosteroids help regulate oxytocin levels, especially during stress and pregnancy, to protect against premature labor.

Hairless protein and putrescine regulate each other, affecting hair growth and skin balance.

PCPA induces hypersexual behavior in male rats regardless of age or castration status.

Human hair follicles can produce stress hormones like the body's main stress response system.