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Dermatosis papulosa nigra (DPN) is a condition of many small, benign skin lesions on the face, a condition generally presenting on dark-skinned individuals. [1]: 638–9 DPN is extremely common, affecting up to 30% of Black people in the US. [2] From a histological perspective, DPN resembles seborrheic keratoses. [3]
This discoloration, black spots on the carapace, chelae, or legs, is the result of melanisation; a defense response to the deterioration of the cuticle. [3] Black nodules have also been observed on the gills, heart, and hepatopancreas of affected individuals, and the presence of the disease is associated with accumulation of material in the ...
The bottom of a window frame sits on top of the window sill of the wall opening. [1] A window sill may span the entire width of a wall from inside to outside, as is often the case in basic masonry construction, making it visible on both the interior and exterior of the building. In such a case, the exterior window sill and interior window sill ...
If you have a fungal infection on your scalp, you may experience patchy hair loss, with small, round bald patches forming in certain parts of your scalp. The hair in the affected area may become ...
Haralson with its typical peel coloration from sooty blotch and flyspeck. Sooty blotch and flyspeck is a descriptive term for a condition of darkly pigmented blemishes and smudges caused by a number of different fungi affecting fruit including apples, pear, persimmon, banana, papaya, and several other cultivated tree and vine crops.
Pieris rapae is a small- to medium-sized butterfly species of the whites-and-yellows family Pieridae.It is known in Europe as the small white, in North America as the cabbage white or cabbage butterfly, [note 1] on several continents as the small cabbage white, and in New Zealand as the white butterfly. [2]
Signs include white clusters of hyphae, which are often present on the leaves, and in some cases can infect the cone itself. If this infection occurs, a brown, necrotic lesion may develop. When both mating types exist within a population, chleistothecia can form and are visible as small, black dots on the undersides of leaves. [citation needed]
Phomopsis cane and leaf spot is a disease that causes symptoms in the common grapevine species, Vitis vinifera, in many regions of the world. [2] This disease is mainly caused by the fungal pathogen, Phomopsis viticola, and is known to affect many cultivars of table grapes, such as Thompson Seedless, Red Globe, and Flame Seedless. [3]