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The conclusion is that substances can penetrate hair fibers through multiple pathways, including both the cell membrane complex and the non-keratinous parts.

Aδ-LTMRs have complex synapses with glycine, while Aβ-LTMRs have simpler ones.

The lower part of rat vibrissa hair gets more blood and is well-protected for growth.

Root hair growth mechanics depend on turgor pressure and cell wall properties.

Trichoblastomas may mimic fetal skin development by having many Merkel cells, unlike adult skin.

Whiskers can form without sensory nerves or Foxd1, thanks to Meis2 in mesenchymal cells.

Triboelectric nanogenerators can use body movement to power therapeutic treatments, potentially transforming personalized healthcare.

Nerve fibers may worsen mast cell activity, leading to abnormal elastic fiber buildup from sun exposure.

Neuropeptides affect hair growth and could be used to control it.

Microneedles are becoming essential tools in medicine for sensing, drug delivery, and communication.

Netherton syndrome causes specific skin and hair changes that help in early diagnosis.

Neurotrophins, especially NGF, are crucial for pain development and management.

Stress increases certain chemicals in the skin and nerves, which might worsen skin conditions.

Neuropathic pruritus is a commonly overlooked and wrongly diagnosed type of chronic itching that is hard to treat.

Epidermal neural crest stem cells from hair follicles can help repair nerve injuries.

Human hair keratin helps regenerate rat sciatic nerves by transforming Schwann cells and protecting axons.

Keratin hydrogel improves nerve regeneration and motor recovery.

Researchers found a way to make rat hair follicle cells start turning into motor neuron-like cells, but couldn't fully turn them into working motor neurons.

African spiny mice can regenerate skin and hair after wounds due to specific tissue mechanics.

Dopaminergic neurons in the gut have distinct subtypes, some releasing both dopamine and acetylcholine.

Meibomian glands are like hair follicles without a hair shaft.

Bioengineered salivary glands in mice can produce saliva when tasting sour or bitter, but have different protein levels and nerve signals compared to natural glands.

The male silkmoth's antenna develops olfactory structures over 21 days, with full hair formation by day 15.

A man's rare tumor caused unusual nerve-related symptoms that improved after surgery.

Human hair has bipolar electrical charges because of a gap in the hair follicle's electromagnetic field.

Piezoelectric Nanogenerators are promising for non-invasive health monitoring but need efficiency and durability improvements.

Light can turn on hair growth cells through a nerve path starting in the eyes.

Human hair has bipolar electrical charges due to gaps in the hair follicle's electromagnetic fields.

Mesenchymal stiffness affects sweat gland cell development.