Microcheck 142

Various hosts are required to grow different viruses. These include whole animals, embryonated chicken eggs, and cells taken from vertebrates. In constrast to normal cells which divide 50-100 times, cells taken from tumors divide indefinitely. The animal viruses that lyse their host cells can be assayed by counting plaques.

■ Which of the methods used in quantitating viruses requires an electron microscope?

■ Why is it necessary to continually make new primary cultures of normal cells?

■ Would you expect the number of virions to be the same if you measured them by the plaque assay or by counting using the electron microscope? Explain your answer.

You Are What You Eat

You Are What You Eat

Nutrition is a matter that people spend their careers learning about and requires volumes of books to explain. My objective is to instruct you how to consume a healthy nutritional diet that aids your body in burning off fat instead of storing it. You do not require overwhelming science to get this.

Get My Free Ebook


Post a comment