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.
Additional images. 1  Dopamine and serotonin. 2  Degradation of substantia nigra associated with Parkinson's disease. 3  Horizontal MRI (T1 weighted) slice with highlighting indicating location of the substantia nigra. 4  Enhanced Neuromelanin MRI with Color images (RGB) showing Substantia nigra pars compacta.