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the time, Microsoft noted that after 13 years of support, it was time for the company to look forward, unencumbered by outdated software.
Best Answer: Word was released for Xenix and DOS in 1983, Macintosh in 1984, and then Windows when it came out in 1989. Excel was released for Macintosh first in 1985, then Windows in 1987. PowerPoint was first released in 1987, by a company that Microsoft bought up soon after the initial release. Source(s):