Despite the common names ringworm and dermatophyte, the disease is caused by a fungus, not a worm or plant. Trichophyton, Microsporum, and Epidermophyton are the most common genera that cause ringworm in humans. These organisms feed on keratin, the major structural component of hair, skin and nails.
Thuja occidentalis 'Nigra'. Naturally broad, pyramidal evergreen shrub displays deep green, scalelike needles arranged in flat sprays. New light green needles emerge in spring, deepening in color as they mature. Deep green color adds contrast to winter landscape.
1 NAD functions in oxidation-reduction (redox) reactions and non-redox reactions. ( 2 More information). 3  Pellagra is the disease of severe niacin deficiency. 4  It is characterized by symptoms affecting the skin, the digestive system, and the nervous system and can lead to death if left untreated.