Stepnoi Nature Sanctuary eagle ("Aquila heliaca"), demoiselle crane ("Grus virgo"), black-winged pratincole ("Glareola nordmanni"), little bustard ("Tetrax tetrax"), etc Stepnoi Nature Sanctuary Stepnoi State Nature Sanctuary (Russian: государственный природный заказник "Степной") (also Stepnoy Nature Reserve) is a protected area located in Liman district of Astrakhan Oblast, Russia. The sanctuary was declared in 2000 to ensure maintenance of unique natural complex of Stipa steppe providing habitat for saiga antelope ("Saiga tatarica tatarica") and a number of other endangered species of animals and plants. The sanctuary covers an area of 109.4 thousands of hectares. The monitoring program started in 2004 showed that the sanctuary is
Porphyria cutanea tarda Porphyria cutanea tarda Porphyria cutanea tarda (PCT) is the most common subtype of porphyria. The disease is named because it is a porphyria that often presents with skin manifestations later in life. The disorder results from low levels of the enzyme responsible for the fifth step in heme production. Heme is a vital molecule for all of the body's organs. It is a component of hemoglobin, the molecule that carries oxygen in the blood. Hepatoerythropoietic porphyria has been described as a homozygous form of porphyria cutanea tarda, although it can also be caused if two different mutations occur at the