Histopathology of this pigmented lesion showed acanthotic epidermis with melanin pigmentation
of basal keratinocytes and papillary dermal nodular accumulation of melanophages and lymphocytes, which were consistent with tumoral melanosis.
Positive regulation of melanin pigmentation
by two key substrates of the melanogenic pathway, l-tyrosine and l-dopa.
Wortsman, "Melanin pigmentation
in mammalian skin and its hormonal regulation," Physiological Reviews, vol.
Leucism is a condition caused by a genetic mutation which prevents the melanin pigmentation
from being deposited on a bird's feathers.
The physiological accumulation of melanin pigmentation
in melanocytes is manifested clinically in a variety of efflorescence on the skin, mainly moles and freckles.
We describe a case of an infected odontogenic cyst exhibiting verrucous proliferation and melanin pigmentation
. It is also the first case of mortality reported among the several cases reviewed till date.
has been recognized by many factors; the permeation of sunlight is a well recognized source of melanin pigmentation
; specifically, UV radiation causes darkening of the skin and/or sunburn.
The IPL laser targets melanin pigmentation
of the hair and singes each strand until it stops growth completely.
Benign oral mucosal lesions included a diagnosis of coated tongue fissured tongue geographic tongue melanin pigmentation
linea alba and fordyces granules.
is most commonly and widely seen physiologic pigmentation of oral mucosa.
Apes' pale skin, when exposed to sunlight, develops enough protective melanin pigmentation
to enable tanning similar to that of light-skinned people today.
Intracellular melanin in neoplastic cells or background melanin pigmentation