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Why is it difficult to produce efficient vaccines against a viral infection like dengue and AIDS?
It is complex to make vaccines against dengue because there are four dissimilar types of viruses that cause the disease (DEN1, DEN2, DEN3 and DEN4) and it is supposed that the protection against one of them aggravates the clinical manifestation when the person is later infected by the another dengue virus.
In the case of HIV, the production of a vaccine is complex because the virus is highly mutant and evades the antibody action.
What is the difference between a hormone and a morphogen? How do they act and what type of development do they control?
Inter-relationships of Classification The aim of classification is to put together organisms on the basis of their similarities. But the question is what type of similarities?
What is Phylum Nematoda - Roundworms? Nematodes are commonly known as the roundworms. They have a pseudocoelom type of body cavity, and they have a digestive tract that opens t
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Q. What is the difference between sperm and spermatids cells? What is the name of the transformation of spermatids into sperm cells? Sperm cells (the male gametes) are matured
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