Oncogenic Viruses- An Overview
Viruses are intracellular pathogens that reproduce only in the living cell and manipulate the cellular machinery to produce more viruses. Viral replications can affect the cellular genes of the host … Read more
viruses
Positive staining of Viruses
What is positive staining? Positive staining of viruses is similar to negative staining. The difference is that the virus image is darker formed on a light background, unlike the negative … Read more
Negative staining of Viruses
What is the Negative staining of Viruses? Staining techniques are designed to show contrast under microscopic observation. The staining of viruses is done to increase the contrast between the virus … Read more
Foodborne Viruses- Food Poisoning by Viruses
Human enteric viruses are the major cause of nonbacterial gastroenteritis also known as stomach flu and are transmitted via food and waterborne route. Foodborne viruses include the human noroviruses (HNoV), … Read more
How viruses cause disease?
Viruses gain access to the host through skin and mucous membranes, and via the respiratory, gastrointestinal, and genital tracts. Their virulence or lack of it may be determined by very … Read more