History of the discovery of ANCA (Anti-neutrophil cytoplasmic antibody) 1  In 1982, David Davies, an Australian pathologist observed that 'a subset of patients with focal necrotizing and crescentic glomerulonephritis had circulating antibodies that bound to the cytoplasm of normal neutrophils' (5, 6).
Eagles in Oklahoma . Eagles begin arriving in Oklahoma in November and early December. Their numbers peak in January and February, and most birds have left for their northern breeding grounds by the end of March. Bald eagles are sociable in winter, roosting communally in trees near a food source.
The Oklahoma State Flag. The state flag features an Osage warrior's shield on a blue background. An olive branch and a calumet, or peace pipe, lay across the shield. Seven eagle feathers decorate the shield. Both of these items are symbols of peace. The design was officially adopted as Oklahoma's flag in 1925. In 1941 the word Oklahoma was added beneath the shield. The Great Seal of the State of Oklahoma The State Seal features a five-pointed star. In the center of the star is the state motto Labor Omnia Vincit.