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What is the virus that causes flu? Why doesn't the body create permanent immunity against that virus? How does the vaccine against flu work?
Flu is a disease caused by the influenza virus, a highly mutant DNA virus. Because of the high mutation rate of the virus, that forms many dissimilar strains, flu always presents epidemic features in affected populations and people may have some flu episodes during life (the immune response made from previous infections is not efficient in future infections).
The vaccine against flu is a vaccine made of attenuated virus of three dissimilar strains. Each year the WHO (World Health Organization) researches and determines which are the strains that should compose the vaccine. This is a method to face the high mutation rate of the virus.
How different is the fish epidermis from the amphibian epidermis? The fish epidermis is very thin and having mucus-secreting cells. The fish skin does not present keratin. The
Types of Variations - Somatogenic and Blastogenic Variation Changes in somatic parts of the body are somatic variations e.g. wrestler's muscle, circumcised penis of mus
Q What is the cyclosis? Cyclosis is a kind of interior cell movement in which an oriented flow of circulating material is created and maintained in the cytoplasm by the action
Q. Which is the form of protozoan reproduction that generates more variability? Sexual reproduction always generates extra genetic variability than asexual reproduction. That i
why is PCR carried out under sterille conditions?
what is definition of applied biology?
The blood vessels surrounding an acutely inflamed site usually represent progressive vasodilatation from the time of injury.
Indications i) When there is an abnormal rise in the bilirubin level which may be due to physiological or pathological jaundice or any other problem. ii) Prophylactic ph
Q. What do you mean by Binomial system in binomial nomenclature? In the previous sections we have outlined the concepts of binomial nomenclature at International level and the
Hazard identification We start the process of risk assessment by first identifying the hazard. The goal of hazard identification is to identification potential adverse hea
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