In the first use of these catheters in humans, each catheter was specifically shaped to match the size and shape of the aorta of the subject. His work was documented in 1967, and by 1968 the Judkins catheters were manufactured in a limited number of fixed tip shapes.
Cut of beef. Cuts of beef are first divided into primal cuts, pieces of meat initially separated from the carcass during butchering. These are basic sections from which steaks and other subdivisions are cut. The term primal cut is quite different from prime cut, used to characterize cuts considered to be of higher quality.
USDA Choice is the second highest graded beef. It has less fat marbling than Prime. Choice is a quality steak particularly if it is a cut that is derived from the loin and rib areas of the beef such as a tenderloin filet or rib steak. Generally USDA Choice will be less tender, juicy and flavorful with a slightly more coarse texture versus Prime.