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The document concludes that the exact way alcohol causes harm to fetal development is unknown, but it significantly affects nutrient transport to the fetus and a safe level of alcohol during pregnancy is not determined.

Wnt ligands are crucial for hair growth and repair.

Hair follicle stem cells are key for hair and skin regeneration, can be reprogrammed, and have potential therapeutic uses, but also carry a risk of cancer.

Androgens can cause hair growth in some areas and hair loss on the scalp.

Tight junctions are key for skin protection and controlling what gets absorbed or passes through the skin.

The niche environment controls stem cell behavior and plasticity, which is important for tissue health and repair.

Human dermal fibroblasts are the main cells targeted by a virus that can cause a deadly skin cancer, and a certain inhibitor can effectively block this infection.

KGF and activin are crucial for skin healing and repair.

Androgens can both stimulate and cause hair loss, and understanding their effects is key to treating hair disorders.

Layer-by-Layer self-assembly is promising for biomedical uses like tissue engineering and cell therapy, but challenges remain in material safety and process optimization.

The document concludes that rapid identification, isolation, and strict infection control are crucial to manage SARS outbreaks.

5α-reductase inhibitors can cause sexual problems, higher risk of aggressive prostate cancer, and depression.

Advanced human skin models improve drug development and could replace animal testing.

Acne is caused by genetics, diet, hormones, and bacteria, with treatments not yet curative.

Toll-like receptors are important for wound healing, but can slow it down in diabetic wounds.

Hedgehog signaling helps keep hair follicle stem cells the same in both young and old human skin.

Nanotechnology in dermatology shows promise for better drug delivery and treatment effectiveness but requires more safety research.

Products should be called 'sperm-safe' only after thorough, well-designed tests.

Antidepressants called SSRIs can cause skin problems, bleeding risk, and other side effects.

Bimatoprost, a glaucoma medication, may also help treat hair loss.

Researchers developed a method to grow hair follicles using special beads that could help with hair loss treatment.

Prolactin may play a significant role in skin and hair health and could be a target for treating skin and hair disorders.

Effective management of children's hair loss involves accurate diagnosis, various treatments, and supportive care.

Modified rat stem cells on a special scaffold improved blood vessel formation and wound healing in skin substitutes.

Genetic mutations can cause hair growth disorders by affecting key genes and signaling pathways.

Skin aging is largely due to differences in stiffness and elasticity between skin layers, leading to wrinkles.

Hair follicle regeneration in skin grafts may be possible using stem cells and tissue engineering.

Adrenal disorders can cause lasting brain and behavior issues in children.

Researchers developed a mouse model that successfully mimics the bladder damage seen in humans after radiation therapy.

The research suggests that Tourette syndrome is linked to both brain signaling and immune system pathways.