Coronavirus Coronavirus Coronaviruses are species of virus belonging to the subfamily "Coronavirinae" in the family "Coronaviridae", in the order Nidovirales. Coronaviruses are enveloped viruses with a positive-sense single-stranded RNA genome and with a nucleocapsid of helical symmetry. The genomic size of coronaviruses ranges from approximately 26 to 32 kilobases, the largest for an RNA virus. The name "coronavirus" is derived from the Latin "corona", meaning crown or halo, and refers to the characteristic appearance of virions under electron microscopy (E.M.) with a fringe of large, bulbous surface projections creating an image reminiscent of a royal crown or of the solar corona.
Marketing of Halo 3 on the gaming community to spread the word itself. The focus on traditional media would help expand the fan base beyond established gamers and convince the public that the game was a cultural milestone. To build public interest, Microsoft made public statements that "Halo 3" would surpass media sales records, including the July 2007 record of $166 million set by the launch of "Harry Potter and the Deathly Hallows". Microsoft's target was to sell 1.5 million copies of the game. Marketing research suggested that the ""Halo" faithful" could only be counted on to buy 75% of that amount, meaning that