melanism
melanosis

Melanism is common, and some individuals are very dark, almost solid black.

Melanism related to the process of adaptation is called adaptive.

It is a variable species and has a tendency to melanism.

Further evidence, if it were needed, is likely to come from research into the biochemistry of melanism.

This small evolutionary step of 'industrial melanism' was taken in a mere century.

Melanism refers to an excess of black or dark colours.

Melanism is common both in the wild and in captivity.

Another curious feature observed in specimens from southern Florida is melanism.

Many species exhibit melanism, in which some individuals have an all-black coat.

Melanism is common and in some locations all-dark individuals make up the majority of the population.

They also show an adaptation to high altitudes called altitudinal melanism.

Partial melanism in badgers is known, and albinos are not uncommon.

Some individuals of the nominate form show melanism and were once described as a species fuscatus.

As in all crowned pigeons, melanism has been observed.

Thus melanism in rock pocket mice is considered an elegant example of adaptation by natural selection.

Peppered moth evolution is commonly used as an example of industrial melanism.

Genes for melanism in felines may provide resistance to viral infections.

Jaguars with melanism appear entirely black, although their spots are still visible on close examination.

Melanism is quite common in this species.

Recent, preliminary studies also suggest that melanism might be linked to beneficial mutations in the immune system.

The term industrial melanism refers to the genetic darkening of species in response to pollutants.

Some evidence indicates the melanism allele is dominant.

Melanism is an excess of black pigmentation, resulting in a black or dark grey fish.

Bernard Kettlewell begins research into the influence of industrial melanism on natural selection in moths.

His experiment resulted in better understanding of industrial melanism and its effects on the evolution of species.

Smoker's melanosis is benign and does not develop into cancer.

Melanosis is a form of hyperpigmentation associated with increased melanin.

No adverse effects or consequences of melanosis coli have been identified.

Patients with colostomies can have melanosis involving the stoma, which is also of no significance.

Melanosis coli is a frequent find in long-standing factitious diarrhea.

Prolonged use and abuse leads to melanosis coli.

Their pale skins were raddled with melanosis.

"They're not just a hormonally induced melanosis."

Accumulation of lipofuscin in the colon is the cause of the condition melanosis coli.

Oral melanosis is pigmentation of the oral cavity that tends to occur most frequently in black people.

The condition is unrelated to true melanoses, such as Peutz-Jeghers syndrome and smoker's melanosis.

Laugier-Hunziker syndrome is a cutaneous condition characterized by longitudinal melanonychia and genital melanosis.

In 1861, Hulke first described oculodermal melanosis (Nevus of Ota).

Gray skin (melanosis).

The morbid deposition of black matter, is often of a malignant character, causing pigmented tumors is called melanosis.

A study in Sweden showed that 21.5% of smokers and 3% of nonsmokers had lesions that could be classified as smoker's melanosis.

Ocular melanosis - a condition characterized by increased pigmentation of the uveal tract, episclera, and anterior chamber angle.

Smoker's melanosis is characterized by flat, irregular hyperpigmentation of the connective tissue underlying the oral mucosa resulting from tobacco smoking.

A common finding in patients who have used stimulant laxatives is a brown pigment deposited in the intestinal tissue, known as melanosis coli.

A (generally invisible and harmless) side effect of taking Senna medication regularly is Melanosis coli, a brown discoloration of the colon wall.

On biopsy, melanosis coli shows characteristic pigment-laden macrophages within the mucosa on PAS staining.

For a description of melanin-related disorders see melanin, melanosis coli and ocular melanosis.

Riehl melanosis is a form of contact dermatitis, beginning with pruritus, erythema, and pigmentation that gradually spreads which, after reaching a certain extent, becomes stationary.

Provides a network of support and information for people with a large brown birthmark called a giant congenital nevus and/or an associated condition called neurocutaneous melanosis.

The histologic differential diagnosis of mucosal pigmentation is: lipofuscin (melanosis coli), hemosiderin-laden macrophages, and melanin (rare).