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EtiologyThe 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.
Categorisation of Major Brain Functions As a framework, the major brain functions typically divided into modalities and domains. The major modalities are motor function and th
Increase in population size is known as population growth. It depends upon number of persons added to the population and number of persons lost from the population. Addition in pop
Looking at what the academic world is publishing, microarray research is actually hot right now, and people haven't quite figured out what the best way is (some might argue if we s
An enzyme isolated from a mutant bacterium grown at 20 degrees celsius works in a test tube at 20 degrees celsius but not at 37 degrees celsius( 37 degrees celsius is the temperatu
what are lipids? how ther absorption takes place in human bodies?
Explain the Precautions for Use of Light Microscope? 1. Clean the lens system properly. 2. Use xylol only when necessary. 3. Never lower the body tube while looking throu
Explain about the Macro Minerals? Previously we learnt about the structure, properties, deficiencies/toxicity and recommended dietary intakes of several vitamins. In this unit,
Explain the Transmission Electron Microscope Here, thin and dehydrated specimen is used. Electrons pass through the specimen and form image on to photographic film. These are u
Air can enter a plant through the leaf Procure a leaf with a long stalk to it and seal it into a hole through a cork. Fit this with a side tube, and seal the cork into a flask
Honeybees are unusual in that male bees (drones) have only one copy of each gene, while female bees have two copies of their genes. That is because drones develop from eggs that ha
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