Merkel cells are specialized skin mechanoreceptors located
in the epidermis, associated with nerve endings, enabling
detection of touch, pressure, and texture.
The mast cell is an immune cell that releases histamine and
mediators, playing a key role in allergic reactions, inflammation,
and defense against pathogens.
Trichophyton fungi are dermatophytes that infect skin, hair,
and nails, causing ringworm such as athlete’s foot through
keratin degradation and contact transmission.
UV-induced DNA damage occurs when ultraviolet radiation
breaks molecular bonds, leading to mutations, cellular
dysfunction, and increased skin cancer risk.