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

Define energy and protein requirement in geriatric nutrition, Define Energy...

Define Energy and Protein requirements in geriatric nutrition? Decreased physical activity and changes in body composition and decreased basal metabolic rate affects the ma

Hemoglobin, describe the mechanism of allosteric change.

describe the mechanism of allosteric change.

How can a child become infected with gonorrhoea, How can a baby become infe...

How can a baby become infected with (a) gonorrhoea, (b) syphilis   (a)  During birth, a baby might be become infected with gonorrhoea bacteria as it passes by t

Define rna synthesis , The general mechanism of RNA synthesis by these euk...

The general mechanism of RNA synthesis by these eukaryotic RNA polymerases is the same as for the prokaryotic enzyme that is: ?   The initiation  of RNA synthesis  by RNA polyme

What are the alleles of a gene, What are the alleles of a gene? The Dip...

What are the alleles of a gene? The Diploid individuals have paired chromosomes. For instance in humans there are 23 pairs of chromosomes totaling 46 chromosomes. Every pair co

Explain the principle of alkaline copper reduction method, Explain the Prin...

Explain the Principle of alkaline copper reduction method? All sugars which contain a free aldehyde group undergo enolization when placed in hot alkaline solution. This propert

What is the speech perception test, What is the Speech Perception Test ...

What is the Speech Perception Test The subject is asked to listen to a series of 60 sounds, each of which consists of a double e digraph with varying prefixes and suffixes. The

Include the uncertainty interval and confidence level, What is the minimum ...

What is the minimum sample weight, at USP standards (U = 0.1% and k = 3), that can be measured on an analytic balance in which the repeatability is 0.0001 g. Include the uncertaint

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