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

Looking older on the outside might be linked to aging faster on the inside and can be affected by lifestyle choices and health risks.

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.

More oxygen isn't always better and can sometimes be worse.

Flutamide caused damage to male rat reproductive organs and may affect fertility.

5-alpha-reductase inhibitors may cause a low incidence of erectile dysfunction that decreases over time.

Apoptosis, not oxidative stress, is linked to aging in mice with mtDNA mutations.

Secondary aesthetic surgeries for gender reassignment are generally satisfying and advance overall aesthetic surgery techniques, but psychological support is important.

The mini-lift is a less invasive face-lift for younger patients that is quicker, cheaper, and has a fast recovery, but is less effective for the midface and excessive neck skin.

Mice without the vitamin D receptor have bone issues and other health problems, suggesting vitamin D is important for preventing various diseases in humans.

Horse skin has a layered epidermis, a dermis with hair follicles, sweat and sebaceous glands, and is supplied by small arteries.

Activating Notch in adult skin causes T cells and neural crest cells to gather, leading to skin issues.

Hair follicle stem cells are a practical and ethical option for nerve repair in regenerative medicine.

Improve chin and perioral scars with surgery, resurfacing, and other therapies, tailored to each patient.

Forehead creases are formed by a tight connection between the skin and muscle through dense fibers, with changes in skin thickness and fewer skin appendages near the creases.

Hair transplant surgery can rebuild muscle and nerve connections, allowing transplanted hairs to stand up like normal hairs.

Curly hair is mechanically different from straight hair and may need new testing methods.

Curly hair may be caused by a muscle contraction, and muscle relaxants might help treat it.

Minoxidil treatment increases aorta elasticity and reduces stiffness in aged mice, potentially helping with age-related heart issues.

Scientists successfully created and transplanted bioengineered hair follicles that function like natural ones, suggesting a new treatment for hair loss.

A new mutation in the mitochondrial DNA was found in a boy with MELAS, even though his family didn't show typical signs.

A woman with Castleman's disease died from respiratory failure due to bronchiolitis obliterans.

Androgen is important in controlling stem cell differentiation, reducing fat development, and increasing lean mass.

Scientists made working hair follicles using stem cells, helping future hair loss treatments.

Erectile dysfunction is increasingly common in men under 40, with many physical and psychological causes, and various treatment options available.

Hair follicle regeneration needs special conditions and young cells.

Advanced therapies like gene, cell, and tissue engineering show promise for hair regrowth in alopecia, but their safety and effectiveness need more verification.

Scientists have made progress in creating replacement teeth, hair, and glands that work, which could lead to new treatments for missing teeth, baldness, and dryness conditions.

Stem cells rearrangement regenerates functional hair follicles, potentially treating hair loss.

Male pattern baldness involves smaller hair follicles, larger oil glands, and other tissue changes, but not major blood supply issues.