The catecholamine metabolites vanillylmandelic acid and homovanillic acid can be measured quantitatively in the urine as a test for the disease. Pheochromocytoma is a benign tumor derived from the adrenal medulla or sympathetic paraganglia. The tumor secretes epinephrine and norepinephrine. These catecholamines cause attacks of hypertension, headache, nausea and vomiting, sweating, pallor and severe apprehension.
Cloud Gate is a sculpture designed by British artist Anish Kappor, located in AT & T Plaza of Millennium Park within the Loop Neighborhood in Chicago, Illinois. Constructed between 2004 and 2006, the sculpture was unveiled during the summer of 2004.
The Louvreâs glass pyramid was built in 1989 and is 21 metres high. It is made solely of glass and metal and is now one of the cityâs most recognisable landmarks. Itâs erection, however, caused a fair bit of controversy, as the architect, I.M. Pei, was the first non-French architect to work on the Louvre.