Etiology, Biology

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.

Posted Date: 9/19/2012 1:27:28 AM | Location : United States







Related Discussions:- Etiology, Assignment Help, Ask Question on Etiology, Get Answer, Expert's Help, Etiology Discussions

Write discussion on Etiology
Your posts are moderated
Related Questions
Why does geographical isolation lead to speciation? The Geographical isolation between groups of the same species leads to formation of a new species since it disallows crossin

Q. Prevention and Control of Staphylococcal food poisoning? Staphylococcal food poisoning can be prevented by: 1. Avoiding contamination of food with S. aureus. 2. Prev

How successful are you at synthesizing genes with really high G/C content? A: We have an extremely low failure rate, which is about one out of five thousand or ten thousand gen

Olericulture: It concerned with the cultivation or development of vegetables yielding plants. Olericulture is the study of vegetable growing, dealing with the culture of non-woody

Phylum Ciliophora - Protozoan Simple cilia or compound ciliary organelles typical in at least one stage of life cycle; subpellicular cilia present even if surface cilia are ab

Functions of Endosperm The tissue of young endosperm is rich in food materials and various growth hormones. It regulates the precise mode of embryo development and nourishes

Describe cellular location and the basic processes of photosynthesis.

Determine the change in the amount of intracellular chloride Complete motor neuron is removed from a frog and placed in a large volume of normal physiological saline.  The neur

You have identified a protein in a cell that you know that comes from the human body. With respect to that protein you have also determined that it allows sodium ions to go through

Rabies Rabies, a fatal zoonotic viral disease of dogs, cats, man and other mammals, causes an acute encephalomyelitis. The rabies virus belongs to the genus Lyssavirus in the