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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.
Q. What is the use of Adrenergic Receptor? Adrenergic Receptors are also subdivided into 2 major categories: ALPHA α - or- BETA β In general, when NE (E) binds to alpha r
Morphological changes Regressive changes -These changes include the gradual reduction and ultimate disappearance of all those larval structures or organs that become redundan
Q. Tools used in Taxonomy? Before you plan for a field trip decide the tools and equipment required. Certain, equipments are necessary for plant collection. A collecting pick i
general characteristics of phylum chordata
Coelom - Metazoa True coelom is a body cavity which arises within the embryonic mesoderm so that the cavity lies between the body wall (integument; ectoderm) and guts (endoder
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What is Saliva Saliva is the colourless viscous fluid. It helps in swallowing the food by lubricating the food and the neutral pH of saliva prevents the decalcifica
Q. Explain Aortic Valvuloplasty? Valvar aortic stenosis accounts for 4-6 per cent of CHD. LV Outflow Tract obstruction eventually leads to LV dysfunction and congestive heart f
Mitral Valve replacement with Allograft (Mitral homograft) : C. Acar and colleagues used mitral allograft for mitral valvc replacement using a new technique of fixation of p
Mechanism of Phloem Transport The efficiency and magnitude of translocation of food material are evident from the annual yields of various crops and fruits. Now, the question
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