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.
Cloud Gate is named for an ancient Chinese dance, but Lin's works reflect the complex cultural and political history of Taiwan. The troupe, with dozens of dancers, has performed in more than 30 countries; in Taiwan, its outdoor shows regularly attract tens of thousands.