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Q. What is dengue?
The Dengue, or dengue fever, is an epidemic disease in some countries (for instance, in Brazil), and its most dangerous form is hemorrhagic dengue. It is cause through four different but related viruses, the reason that it is difficult for an already infected person to become immunized against the disease. The Dengue is prevalent in subtropical and tropical regions of Asia, Africa and South America and it is transmitted by the bite of the Aedes aegypti mosquito, a diurnal mosquito. The viral infection causes diverse symptoms similar to flu, like malaise, fever, myalgia (muscle pain); in hemorrhagic dengue high fever, without or with convulsions, and hemorrhages may take place leading to circulatory failure and death. There is no vaccine to cure dengue since there are four agent viruses and it is supposed that the severity of the disease is greater when the patient is already protected against one kind of virus and is infected by another. The best prophylactic process is to eliminate the vector mosquito.
Explain the Filtration - Air Sampling? Filtration - Air stream may also be filtered through a micro-filter. Microorganisms are released from the filter using a suitable diluen
what is its working
Q. How does the embryo turn from gastrula into neurula? How is the neural tube formed? What is the embryonic origin of the nervous system in vertebrates? The neurula stage is c
Why are euglenas involved in polemics related to their taxonomic classification? Euglenas are included in taxonomic polemics because they tend to be classified sometimes as pro
Plot the amount of DNA in the nucleus of a spermatogonia from the G1 stage prior to the first meiotic division through the completion of meiosis. Label each of the major stages of
Q. Explain Bruce Protocol? Bicycle Ergometry Most bicycle test are performed sitting upright, but supine bicycle test have become more popular. Treadmill Test The
Devonian is the period of geologic time from 410 - 360 million years before the present. Life on land diversified, with amphibians appearing late in this period of time. Plants we
The course and ultimate prognosis of ARF is usually directly related to the severity of carditis. The course and prognosis also depends upon recurrence of rheumatic fever. In pre-p
Explain the work of Linnaeus in animal Taxonomy? In 18th century, the work of Linnaeus and his followers (Haartman, 1751, 1764, Kolreuter, 1761-66) helped systematic to advance
Q. Illustrate Natural and Phylogenetic Classification? Natural Classification Natural systems of classification reflect the situation as it might have existed in nature. T
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