Ceretec Description. The Ceretec kit is supplied as a pack of 5 vials for use in the preparation of a technetium Tc99m exametazime intravenous injection as a diagnostic radiopharmaceutical for use as an adjunct in the detection of altered regional cerebral perfusion and for the radiolabeling of autologous leukocytes.
Most of the Caddo historically lived in the Piney Woods ecoregion of the United States, divided among the state regions of East Texas, southern Arkansas, western Louisiana, and southeastern Oklahoma. This region extends up to the foothills of the Ozarks.
The first Arkansas well that yielded sufficient quantities of oil was the Hunter No. 1 that was drilled in April 16, 1920 near Stephens, in Ouachita County. A few days later, gas was discovered in the northern part of the present El Dorado field in Union County by the Constantin Oil and Refining Company.