Coronaviruses are recognized by club-shaped surface glycoproteins that are 20 nm long and resemble solar coronas. Which one of the following is a characteristic ability of these viruses? (AIPG 2011)
|A||Agglutinate human red blood cells|
|B||Cause the common cold|
|C||Grow profusely at 50oC|
|D||Grow well in the usual cultured cell lines|
a. Coronaviruses, discovered in 1965, are thought to be a major agent of the common cold, especially in older children and adults.
b. The virion is known to contain RNA, but other elements of its structure are unclear. At 34°C, viral multiplication is profuse; however, infectivity is greatly reduced at higher temperatures or following extended incubation.
The SARS virus is an important example of Coronaviruses.
Rhinoviruses (picornaviruses) are the other major cause of the common cold