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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.
Shapes: Nightingale Ward In the 1940s, this traditional nursing unit was based on the long rectangle pavilion type ward and self-contained unit. This concept is establis
Describe the concept of soil testing Different grades of complex and mixed fertilizers are being marketed to suit the soil and crops of a region. The recommendations are made o
Phenetic Classification This system is based exclusively upon face value of observed characters without direct reference to phylogeny. The taxa are either classified on the basi
Amoeboid Protozoan Amoeboid protozoan are distinguished by the presence of flowing extensions of their body known as pseudopodia. These are used for feeding and locomotion. Th
PHYLUM MOLLUSCA Definition and Introduction Basically bilateral and protostomial eucoelomate eumetazoans whose soft body (L. Millis or molluscum= soft) is unsegmente
What is criminal law? Criminal law: A crime is an offence against society that accepted behaviours and is illegal by law. These all persons accused are prosecuted through
Describe two pieces of evidence indicating that speciation does not always occur at the same rate. Some species of moths on the Hawaiian Islands appear to have evolved during t
What does an osteoblast cell do? Living cells within the bone are occupied in an unceasing process of remodeling. Osteoblasts lining the surface of bone are much like fibroblas
What is the energy efficiency of photosynthesis? a) What area is occupied by each molecule? b) Calculate the molecular absorption cross section in units of A 2 A cr
Explain about the Asepsis - Methods of Food Processing? Food is a living system and it has natural protection mechanisms in its raw agricultural state. Just removed once from t
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