Definition: In this task, you're given a paragraph from the research paper and your task is to generate a suitable title for the research paper based on the given paper. Under 100 words is a good title length.
Input: A new virus isolated from the lungs of rats is prevalent in colony reared and wild rats and induces a fatal pneumonitis in newborn rats. The virus, designated as rat coronavirus (RCV), exhibits properties representative of the coronavirus group: characteristic surface structure, particles somewhat variable in size averaging approximately 90 m~z, apparent R2ffA content, essential lipid, heat sensitivity, and a close serologic relationship with the mouse hepatitis virus complex. I~CV grows well in primary rat kidney cell cultures, exhibits a pathognomonic type CPE, and produces a complement fixing antigen which is sensitive for detection of antibody and useful in sero-epidemiologie studies.

Rat Coronavirus (RCV): A Prevalent, Naturally Occurring Pneumotropie Virus of Rats 1