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Tight junctions create a barrier in pig hair follicles that controls what can enter the skin.

Mouse epidermal growth factor temporarily stops wool growth and causes cell changes in Merino sheep.

Sebum production in sebaceous glands is similar to hair growth, involving cell development and degeneration.

Molluscum contagiosum can occur in epidermoid cysts, especially with prolonged steroid use.

17β-Estradiol slows wound healing in male mice through estrogen receptor-α.

Mouse spermatogenesis shows that stem cells can behave flexibly and move widely in open environments.

High levels of male hormones in pregnant mice cause heart enlargement and poor heart function in their female babies.

Newly divided skin cells quickly move to join skin structures due to tissue tension and specific signals.

MicroRNA-200 prevents sebaceous gland development by inhibiting SOX9 and cell cycle progression.

Scube3 gene affects mouse embryo growth in multiple areas, but needs more research.

The study concludes that a genetic mutation in TFM mice leads to reduced androgen receptor activity, affecting the body's response to male hormones.

Southern elephant seals develop hair follicles and skin layers before birth, with moulting starting a week after birth and finishing in three weeks.

Age and androgen levels significantly affect meibomian gland structure and function.

A guinea pig with ovarian cysts had a uterine infection and abnormal uterus lining due to a piece of hay inside it.

Ornithine decarboxylase is crucial for hair growth regulation in mice.

Two microRNAs affect hair follicle development in sheep by targeting specific genes.

μ-Crystallin may help hair growth by affecting thyroid hormone levels in mouse hair follicles.

Bilateral ovarian hyperthecosis is a rare but treatable cause of increased facial hair in postmenopausal women.

Most women with hirsutism in the UAE have polycystic ovary syndrome (PCOS).

TGF-β is crucial for controlling stem cell behavior and changes in its signaling can lead to diseases like cancer.

Amenorrhea is relatively rare and initial testing should check FSH, TSH, and prolactin levels.

PCOS symptoms change with age; younger women have higher androgen levels and less metabolic issues, while older women face more metabolic challenges despite milder PCOS symptoms.

Woodhouse-Sakati syndrome often causes sexual development issues, hair loss, learning disabilities, deafness, muscle contractions, limb pain, and diabetes.

Amenorrhea is when a woman doesn't have periods, with primary amenorrhea starting by age 15 or within five years of breast development, and secondary amenorrhea when periods stop for three months. It affects 3-4% of women not pregnant, breastfeeding, or in menopause, mainly due to polycystic ovary syndrome, hypothalamic amenorrhea, hyperprolactinemia, and ovarian failure.

Diagnosing PCOS in teenagers should focus on signs of excess male hormones and not rely solely on ovarian ultrasound or irregular periods, and should be reassessed in adulthood.

Amenorrhea, or the absence of periods, should be evaluated by age 15 or within five years of early breast development, and is most commonly caused by conditions like polycystic ovary syndrome and hypothalamic amenorrhea.

Higher thyroid hormone levels may be linked to certain types of polycystic ovary syndrome.

PCOS treatment should be personalized, using birth control pills or metformin for symptoms, with lifestyle changes being essential.

Machine learning can accurately diagnose PCOS non-invasively using clinical and ultrasound features.

Obese and lean women with PCOS have different symptoms and need different treatments.