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 procedure for sub-culturing of a culture, Explain Procedure for Sub...

Explain Procedure for Sub-Culturing of a Culture Now carry out the exercise following the steps given herewith: 1. Sterilize the inoculating loop and needle by heating to re

Management of hypertension, Q. Management of hypertension? the manageme...

Q. Management of hypertension? the management of hypertension, angina pectoris and myocardial infarction. It must be clear to you that some aspects of dietary management may di

Corpus allatum and juvenile hormone, Corpus Allatum and Juvenile Hormone ...

Corpus Allatum and Juvenile Hormone The corpora allata are rounded glands attached to the posterior side of every corpus cardiacum making a compact body just behind the brain.

Oxidative phosphorylation occurs in the inner membrane, In  eukaryotes,  th...

In  eukaryotes,  the electron  transport  and oxidative phosphorylation occurs in the inner membrane of mitochondria.  These processes re-oxidize the FADH 2 and NADH   which comes

What does a two-direction arrow show in a chemical equation, What does a tw...

What does a two-direction arrow show in a chemical equation? The oxygen atoms share two pairs of electrons, as every atom needs two more electrons to fill the orbitals of its o

Ribosome in the translation of one mrna molecule, Q. How many of the same p...

Q. How many of the same proteins are made at the same time by each ribosome in the translation of one mRNA molecule? How does successive protein production occur in translation?

Successive changes in animal life during hydrosere, Successive Changes in A...

Successive Changes in Animal Life during Hydrosere The successive changes in plant communities in the different seral communities of a hydrosere. The question arises, is ther

Explain dna or rna segment, DNA or RNA segment tagged with a radioactive mo...

DNA or RNA segment tagged with a radioactive molecule is called: 1. Vector 2. Probe 3. Clone 4. Plasmid Probe

How to facilitate information transfer during transcription, How is energy ...

How is energy used to facilitate information transfer during transcription?

Explain vegetable sterilization process, Explain vegetable sterilization pr...

Explain vegetable sterilization process Canning, which involves heat sterilization, is one of the most important processes in vegetable preservation. As compared to other foods

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