History of viruses, Biology

Assignment Help:

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.


Related Discussions:- History of viruses

Causes of malnutrition in inflammatory bowel disease, Q. Causes of Malnutri...

Q. Causes of Malnutrition in Inflammatory Bowel Disease? The causes of malnutrition include: • Decreased oral intake, which can be disease induced due to abdominal pain, dia

Explain objective anti-arrhythmic pacemaker defibrillators, Explain Objecti...

Explain Objective Anti-arrhythmic pacemaker defibrillators? After reading this unit, you should be able to: 1 describes the classification of ant arrhythmic drugs; 2 understand

Offspring, #q1. If offspring exhibit a 3:1 phenotypic ratio, what are the g...

#q1. If offspring exhibit a 3:1 phenotypic ratio, what are the genotypes of a parent?uestion..

Poultry and duck diseases-fowl pox, Fowl pox Fowl-pox is a highly infec...

Fowl pox Fowl-pox is a highly infectious disease of poultry, especially chickens and turkeys. Pheasants, ducks, geese and guineafowls also suffer from an infection similar to f

Discuss in detail about the mitochondria, Discuss in detail about the Mitoc...

Discuss in detail about the Mitochondria An important function of the cell is to derive energy from the different oxidisable nutrients, such as, carbohydrates and fats supplied

Describe the terms diffusion osmosis and filtration, Describe the terms dif...

Describe the terms diffusion, osmosis and filtration. Explain why each process is important for the human body.

Modern theory in biology, Modern Theory Naturalistic theory: Accordin...

Modern Theory Naturalistic theory: According to this theory Life originated upon our earth spontaneously from nonliving matter. But there are two significant points in this r

Responses of plants to stress, Responses of Plants to Stress You know ...

Responses of Plants to Stress You know that certain plant species can grow in severe environmental extremes. For example, plants grow below 0°C in the Himalayas and above 45°C

Basic planes of cleavage, Basic Planes of Cleavage The basic planes a...

Basic Planes of Cleavage The basic planes along which the egg and its daughter blastomeres are divided during early cleavage are: A. Meridional Plane - the cleavag

Economic aspect of biodiversity, Q. Economic aspect of biodiversity? Bi...

Q. Economic aspect of biodiversity? Biodiversity serves as an income generating activity for countries around the world. Many people visit forests, beaches, mountains, grasslan

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd