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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.
a) What is the significance of the epiglottis in human body? b) What happens to the glycogen concentration in the liver cells when the level of adrenaline enhances in the blood
A cyclic hemiacetal with a six-membered oxygen-containing ring is referred to as a(n): Select one: a. aldehyde. b. pyranose. c. ketopentose. d. furanose. e. sorbi
What are the three main types of passive transport? The three main kinds of passive transport are a) simple diffusion, b) osmosis and c) Facilitated diffusion. C
Enumerate the stages in trabecular bone surface remodeling The stages in trabecular bone surface remodeling are: 1. Quiescence - resting state of the bone surface. 2. Act
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What are monosaccharides, oligosaccharides and polysaccharides? Monosaccharides are normal molecules of carbohydrates that cannot be broken into smaller molecules of other carb
LEN S - In lumen of eye ball, a large colourless, transparent, more convex on back side, lens present covered by lens capsule. When white tissues are formed in it, it b
What are likely to be (a) the coldest, (b) the warmest parts of the body? The extremities of the body (hands and fingers, feet and toes, ears and nose) are likely to be the col
Tonicity and the plant cell. Table 3: Amount of water displaced by potato samples before and after experiment?
I nfe c tio u s laryngotracheitis It is a slow, laterally spreading respiratory disease of chickens, pheasants, peafowl and turkeys caused by a herpes virus with high morb
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