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

Is rabies caused by virus or by bacteria?, Q. Is rabies caused by virus or ...

Q. Is rabies caused by virus or by bacteria? How is it transmitted? Which organs and tissues are affected by the disease? How is it prevented and treated? The Rabies, as well k

Biochemical function - essential elements, Biochemical Function - Essential...

Biochemical Function - Essential Elements Elements Mg, Mn, K, Ca and Fe are cofactors for many enzymatic reactions. Fe is carrier of electrons in electron transfer chain. Phos

Pathophysiology of constrictive pericarditis, Q. Pathophysiology of constri...

Q. Pathophysiology of constrictive pericarditis? Ans. The thickened and rigid pericardium causes constriction of the heart and restricts ventricular dialatation and diasto

Explain about the zygomycota - fungi, Explain about the Zygomycota - Fungi?...

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

Creating a zoobook, Animal class....phylum arthropoda subphylum arthropoda

Animal class....phylum arthropoda subphylum arthropoda

Explain soy protein concentrates - protein concentrates, Soy Protein Concen...

Soy Protein Concentrates The Association of American Feed Control Officials, Inc. (AAFCO) specifies soy protein concentrates as follows:  "Soy Protein Concentrate is organiz

Explain the effect of deficiency of copper in human, Explain the effect of ...

Explain the effect of Deficiency of Copper in Human? Owing to the remarkable homeostatic mechanisms, copper deficiency in humans is rare. However, copper deficiency has been re

Wace, Excretory organ of lizard.

Excretory organ of lizard.

Similarities between cardiac, SIMILARITIE S BETWEEN CARDIAC AND SKELETAL M...

SIMILARITIE S BETWEEN CARDIAC AND SKELETAL MUSCLES - Both cardiac and skeletal muscles are made up of elongated fibres which have numerous myofibrils. The myofibrils of

Animals, explain the modes of nurition in animals

explain the modes of nurition in animals

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