Girasol definition, an opal that reflects light in a bright luminous glow. See more.
Pheophytin or phaeophytin (abbreviated Pheo) is a chemical compound that serves as the first electron carrier intermediate in the electron transfer pathway of Photosystem II (PS II) in plants, and the photosynthetic reaction center (RC P870) found in purple bacteria.
Pheochromocytomas are catecholamine producing tumors of chromaffin cells, that can occur sporadically or as part of a familial syndrome. Although the majority are found in the adrenal glands, pheochromocytoma can basically be found wherever chromaffin tissue can be found. Ninety-seven percent have been found in the abdomen, 2% in the thorax and 1% in other regions.