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Two main types of fibroblasts with unique functions and additional subtypes were identified in human skin.

The conclusion is that proper signaling is crucial for hair growth and development, and errors can lead to cancer or hair loss.

Dutasteride more effective for hair growth, but has more side effects than finasteride.

Noggin is necessary to start the hair growth phase in skin after birth.

Hair follicle development and microbes help regulatory T cells gather in newborn skin.

Finasteride treats enlarged prostate and may help with baldness, but effects on sexual function and male fetuses are unclear.

Shorter CAG repeats may cause hair and skin issues, while longer ones may link to acne.

Hair loss in men is common, treatable, but not curable.

Different types of skin cells have unique genetic markers that affect how likely they are to spread cancer.

Wnt ligands are crucial for hair growth and repair.

Epidermal stem cells are diverse and vary in activity, playing key roles in skin maintenance and repair.

Blocking JAK-STAT signaling can lead to hair growth.

Estrogens significantly influence hair growth by interacting with receptors in hair follicles and may help regulate the hair growth cycle.

Early diagnosis and individualized treatment improve outcomes for Congenital Adrenal Hyperplasia.

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

Keratinocytes help heal skin wounds by interacting with immune cells and producing substances that kill pathogens.

The Sonic hedgehog pathway is crucial for new hair growth during mouse skin healing.

Alopecia areata is a common autoimmune disease affecting about 2% of people, causing significant disability and often associated with mental health issues and other autoimmune conditions.

Skin aging is due to impaired stem cell mobilization or fewer responsive stem cells.

Some viruses can cause cancer by changing cell processes and avoiding the immune system; vaccines and targeted treatments help reduce these cancers.

Male hormones affect COVID-19 severity and certain drugs targeting these hormones could help reduce the risk.

Protoporphyrin IX is useful in cancer treatment but can cause health problems if not properly regulated.

Different types of stem cells with unique roles exist in blood, skin, and intestines, and this variety is important for tissue repair.

Adam10 enzyme is crucial for healthy skin and proper Notch signaling.

Macrophages help heal nerves by aiding the maturation of Schwann cells and are important for nerve repair.

Tofacitinib may help treat severe hair loss, but more research is needed.

Different types of stem cells exist within individual skin layers, and they can adapt to damage, transplantation, or tumor growth. These cells are regulated by their environment and genetic factors. Tumor growth is driven by expanding, genetically altered cells, not long-lived mutant stem cells. There's evidence of cancer stem cells in skin tumors. Other cells, bacteria, and genetic factors help maintain balance and contribute to disease progression. A method for growing mini organs from single cells has been developed.

The conclusion is that the risk of losing significance in meta-analysis results increases with smaller effects and more missing data, and using the median standard deviation for imputation is recommended.

The skin's internal clock affects healing, cancer risk, aging, immunity, and hair growth, and disruptions can harm skin health.

Baldness is more common in Chinese men than women, increasing with age, and is influenced by genetics.