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 toxic chemicals released when cells die. Once released (lysed), and ingested, these toxins can damage liver and nerve tissues in mammals. In areas where water quality is not closely monitored, the World Health Organization has assessed toxic algae as a health risk, citing the production of anatoxin-a, saxitoxins, and cylindrospermopsin. Dogs have been reported to have become ill or have fatal reactions after swimming in rivers and lakes containing toxic "A. flos-aquae". Microcystin toxin has been found in all 16 samples of "A. flos-aquae" products sold as food supplements in Germany and Switzerland, originating from Lake Klamath: 10 of 16