History of viruses, Biology

In the early days of microbiology, the disease producing submicroscopic agents were termed as 'filterable viruses' because of their ability to pass through conventional filters which retain bacteria. The existence of viruses was first observed in 1892 in the mosaic disease of the tobacco plants by Beijerinck and Ivanovski. That the foot-and- mouth disease of cattle is caused by a virus was discovered in 1898 by Loefler and Frosch. Since then a large number of viruses from plants, animals and human beings have been recognized for their involvement as etiological agents of disease.

Posted Date: 9/18/2012 8:03:48 AM | Location : United States







Related Discussions:- History of viruses, Assignment Help, Ask Question on History of viruses, Get Answer, Expert's Help, History of viruses Discussions

Write discussion on History of viruses
Your posts are moderated
Related Questions
Secondary Growth in a Typical Dicotyledonous Stem In stem, the secondary growth in thickness in diameter is confined both intrastelar, i.e., in the stele and extrastelar regio

Cardiac surgical intervention has an increasingly important role in the treatment of intracardiac complications of endocarditis. Retrospective data suggest that mortality is unacce

How does the study of fossils strengthen the theory of evolution? The study of fossils reveals ancient and extinct species having many same structures to others of the present

Q. Cows swallow their food once and then this food goes back to the mouth to be chewed again. How can this phenomenon be explained? The food ingested by cows and other ruminant

Explain about the Zygomycota - Fungi? Fungi belonging to zygomycota are called zygomycetes. Hyphae in this sub-class are coenocytic. Asexual spores develop in sporangia at the

ExplainTransketolase Transketolase with the help of TPP  and Mg ++   is  required again. This  time  it  transfers carbon 1+2 from xylulose-5-phosphate  to erythrose-4-phospha

Define methods of prevention and control of anaemia? The available methods of prevention and control of anaemia are: Supplementation Food fortification Dietary

Explain the History of Plant Classification? Before Darwin's theory of evolution and publication of his epoch making work 'Origin of Species' in 1959 no outstanding basis for

Mesophytes These plants grow in moist habitats and well-aerated soils. They prefer soil and air of moderate humidity but fail to swive in areas with water-logged soils or oveta

Functional properties of proteins These are those physico-chemical properties that enable the proteins to contribute to the desirable characteristics of the food Potential f