Etiology, Biology

Assignment Help:

Etiology
The infectious agent of psittacosis - lymphogranuloma venerum trachoma group (PLVG) is an obligate intracellular parasite and is classified as separate genera with only 2 species, viz. Chlamydia trachomatis and Chlamydia psittacii. These organisms are the members of an exclusive order Chlamydiales under the family Chlamydiaceae. The organism resembles bacteria in the composition of the cell wall, as it possesses both RNA and DNA and also multiply by binary fission. However, unlike bacteria, this multiplication occurs only within the host cells. In this respect, like viruses the organism is intracellular and can only be propagated or multiply in living cells. The elementary bodies of chlamydia stain with basic dyes and are visible as small, round red coloured dots with the light microscope when stained by the methods of Machiavello or Gimenez or modified acid-fast techniques. Their colour is purple blue in Giemenez stained preparations and appear Gram negative in Gram’s stained preparations.


Related Discussions:- Etiology

Explain with reference to aquatic ecosystem, That is eutrophication? Explai...

That is eutrophication? Explain with reference to aquatic ecosystem. or Name any two source organisms of agar. List any four areas in which agar has wide application.

Phylum Coelenterata, what is its description and 3 most common example

what is its description and 3 most common example

Aerobic respiration, Ask question end product of aerobic repiration ar...

Ask question end product of aerobic repiration are

Pup, hey what is puperty

hey what is puperty

Early-recurrence of angina, Early: Recurrence of angina soon after the pa...

Early: Recurrence of angina soon after the patient resumes activities is either due to inadequate 1.evascula1isation or acute graft closure. In the immediate post-operative per

Composed of only glucose monomers, Which of the following is composed of ON...

Which of the following is composed of ONLY glucose monomers? (mark all that apply) Select one or more: a. Starch b. glycogen c. Maltose d. chitin e. Cellulose

Etiology of diarrhoea, Etiology   The causes of diarrhoea can be classi...

Etiology   The causes of diarrhoea can be classified as follows:  i)  Infectious causes   Viral  : Rota virus, Norwalk and allied viruses, Enterovirus, Influenza virus,

PHYLUM MOLLUSCA, How we attempt a question of phylum mollusca?

How we attempt a question of phylum mollusca?

What are steroids, What are steroids? What are some examples of steroids wi...

What are steroids? What are some examples of steroids with a biological function? Steroids are lipids based in an angular combination of four carbon rings, three of them made o

Transcription and processing of trna in eukaryotes, In the eukaryotes, the ...

In the eukaryotes, the transmit RNA genes exist as multiple copies and are transcribed by RNA polymerase III or RNA Pol III. As in prokaryotes, various tRNAs may be transcribed tog

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