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
Latin word order Other factors that play a role in word order are semantic (for example, adjectives of size usually precede the noun, those of material more often follow it), and in some Latin authors consideration of such matters as euphony, assonance, and rhythm. One major area of disagreement is how far syntax plays a role in word order. According to Devine and Stephens (2006), Latin has a basic neutral word order, which they state is as follows: A "non-referential object" is one like "impetum" in the phrase "impetum facere" ("to make an attack") which goes closely with the verb. Following the theories