Margerey (J Path Bact 1949; 61:203-208) studied 250 mitral valves and postulated that the mechanism of formation is intimal damage due to mechanical trauma at the leaflet coaptation. The damaged area is covered by fibrin, which subsequently becomes uplifted, or partially detached from the valve surface.
Irving, TX Current Weather and Forecast. Irving, TX Weather Forecast. 3:20 PM CDT SAT APR 15 2017. TONIGHT - Partly cloudy this evening - then becoming mostly cloudy. Lows in the mid 60s. South winds 5 to 10 mph.
The primary coordinate point for Irving is located at latitude 32.8577 and longitude -96.97 in Dallas County. The formal boundaries for the City of Irving (see map below) encompass a land area of 67.04 sq. miles and a water area of 1 sq. miles. Dallas County is in the Central time zone (GMT -6). The elevation is 482 feet.