Betacoronavirus the Latin “corona” meaning crown or halo, referring to their image under electron microscopy of crown-like spikes on their surface similar to the solar corona. This morphology is created by the viral spike (S) peplomers, which are proteins that populate the surface of the virus and determine host tropism. The order Nidovirales is named for the Latin nidus, which means nest. It refers to this order’s production of a 3' co-terminal nested set of subgenomic mRNA's during infection. Betacoronavirus Betacoronaviruses are one of four genera of coronaviruses of the subfamily "Coronavirinae" in the family "Coronaviridae", of the order "Nidovirales". They
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