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.
Location. This report describes the typical weather at the Dallas Love Field (Dallas, Texas, United States) weather station over the course of an average January. It is based on the historical records from 1974 to 2012.Earlier records are either unavailable or unreliable.Dallas, Texas has a warm humid temperate climate with hot summers and no dry season. The area within 25 mi of this station is covered by grasslands (74%), built-up areas (20%), and lakes and rivers (6%).arlier records are either unavailable or unreliable. Dallas, Texas has a warm humid temperate climate with hot summers and no dry season. The area within 25 mi of this station is covered by grasslands (74%), built-up areas (20%), and lakes and rivers (6%).