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

Kingdom animalia, in what order did the shellfish belong? in what genus did...

in what order did the shellfish belong? in what genus did the shellfish belong? in what species did the shellfish belong?

Explain generation of sound in mvp, Explain Generation of sound in MVP? ...

Explain Generation of sound in MVP? Generation of sound in MVP: These are generated due to sudden tensing of redundant leaflets and elongated of chordae tendinae. Interventions

Examples of invertebrate nervous system, Q. Using examples of invertebrate ...

Q. Using examples of invertebrate nervous systems how can the process of evolutionary cephalization be described? Considering the example of invertebrates it is observed that e

Planning the nursing care for dysentry, Planning the Nursing Care   1) ...

Planning the Nursing Care   1) Maintain hydration and electrolyte balance.  2) Administer accurate and adequate antibiotics drugs.  3) Prevent the spread of infection.

Determination of limb polarities, Determination of Limb Polarities The...

Determination of Limb Polarities The limb pattern is characterized by three axes (or polarities) as displayed in diagram:  (1) The direction from the shoulder (or hip) to t

Explain about posterior wall, Explain about Posterior wall Posterior w...

Explain about Posterior wall Posterior wall separates the antrum from the infra-temporal fossa and contains two important structures. Posterior superior alveolar nerve and

What is the health monitoring of infant, Explain the Health Monitoring of I...

Explain the Health Monitoring of Infant? Infections are a major cause of malnutrition in children. For many of the preventable early childhood diseases, vaccines are now avail

Explain about single cell proteins, Single Cell Proteins (SCP)  The t...

Single Cell Proteins (SCP)  The term SCP was coined by Prof. Caroll Wilson (MIT) in 1966. It means the proteins obtained from microbial sources, i.e. algae, fungi, bacteria,

Fate of the germ layers, Fate of the germ layers In cnidarians and cte...

Fate of the germ layers In cnidarians and ctenophores, all the cell types develop from either ectoderm or endoderm. Similarly all the tissues and organs in the rest of the ani

Determine about the national adult reading test, Determine about the Nation...

Determine about the National Adult Reading Test The National Adult Reading Test (NART; Nelson, 1982) allows the researcher to obtain an estimate of an individual's IQ prior to

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