Related Experiment Video
Updated: Jan 27, 2026

In Vitro Selection of Aptamers to Differentiate Infectious from Non-Infectious Viruses
Published on: September 7, 2022
Structural and growth characteristics of infectious bursal disease virus
Abstract:
The infectious bursal disease virus is not enveloped and has a diameter of 60 nm and a density of about 1.32 g/ml. It contains two pieces of single-stranded RNA with molecular weights close to 2 X 10(6). The capsid is made up of four major polypeptides with molecular weights of 110,000, 50,000, 35,000, and 25,000. The virus replicates in chicken embryo fibroblasts rather than in epitheloid cells. After an eclipse period of 4 h, virus production reaches a maximum about 12 h later. The virus has no structural or biological similarities with defined avian reoviruses, and it cannot be classified in one of the established taxonomic groups.
Related Concept Videos
Characteristics of Life
What are Viruses?
Accessory Structures of the Skin: Hair Growth and Types
Viral Structure
Characteristics of Fluids
Characteristics of Fluids
Fluids, which include both liquids and gases, are substances that deform continuously under shearing stress. For example, water and oil are liquids with molecules that can...

