Aquae Calidae, Bulgaria local church her imperial robes. In 584 the Avars under Khan Baian conquered Aquae Calidae, but Baian spared the baths at the request of his harem. In one of the churches of the city the Avars found the imperial robes of Anastasia and Baian took them and allegedly claimed control of the empire. The first archaeological excavations were by Bogdan Filov in 1910. In the pools he found over 4,000 coins of various eras, jewelry and other everyday items dated from the 5th to the 13th century. Since 2008 large-scale excavation and reconstruction has taken place. By 2010, an area
Aphanizomenon flos-aquae (dietary supplement) from the air, and water to synthesize proteins, carbohydrates, and lipids. AFA is also able to directly use molecular nitrogen from the air to produce proteins and other nitrogen-containing biomolecules. This ability is widespread in prokaryotes, but unknown in eukaryotes. "Aphanizomenon flos-aquae" as a species has both toxic and non-toxic forms. While benefits have been indicated, toxicity has been shown in some strains of the species "Aphanizomenon flos-aquae", with cylindrospermopsin and saxitoxins present, and microcystins found contaminating AFA dietary supplements. The World Health Organization's "Guidelines For Drinking Water Quality" note Anatoxin-a, saxitoxins, and cylindrospermopsins are present in the Aphanizomenon genus.