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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.
Many definitions of species have been offered, but none of them proved to be satisfactory. The definitions did not categorically provide the basis to decide whether two similar gro
Define Heart Diseases - excessive fat intake? Heart diseases show strong links to fat and cholesterol intake. Foods rich in cholesterol are of animal origin and given in Table.
Explain about the primary protein derivatives? a) Proteins: These are the insoluble products which result from the incipient action of very dilute acids or enzymes. e.g. casein
Germ layer theory
Symmetry - Metazoa All living organisms have some body shape and form. The general body plan of animals may be organized in one of several ways . Arrangement of parts or organ
Structure of plasmodium
Multipotent SCs: are cells differentiated & form a number of other tissues, while their sources are not fetal tissue; umblical cord blood & postnatal stem cells including dental p
Clonig,plasmid vectors,lambda&M13based vectors
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Give two examples in each case of (a) continuous, (b) discontinuous variation in human populations. a) Continuous variation: for example, weight, height, intelligence, ha
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