Using modern platelet aggregometers, it is possible to evaluate platelet secretion simultaneously, by measuring release of ATP by the aggregating platelets. Measurement of platelet secretion allows the laboratory diagnosis of secretion defects with greater sensitivity than platelet aggregation testing alone.
Windows XP has long been an OS Microsoft begrudgingly kept alive far longer than it could have ever imagined. Initially released in 2001, official support for Windows XP persisted all the way through April 2014. At the time, Microsoft noted that after 13 years of support, it was time for the company to look forward, unencumbered by outdated software.
Windows XP Release Date. Windows XP was released to manufacturing on August 24, 2001 and to the public on October 25, 2001. Windows XP is preceded by both Windows 2000 and Windows Me. Windows XP was succeeded by Windows Vista. The most recent version of Windows is Windows 10 which was released on July 29, 2015.