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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.
Cosmid: The type of artificially constructed vector taken in use for cloning the 35-45 kb of DNA. These are plasmids carrying the phage l cos site (which permits packaging into l
What is Slime Molds in diversity of life? Acrasiomycota and Myxomycota are appropriately named slime molds. They are slimy! The other part of their name comes from the time whe
Write in 5-6 lines about food pyramid. The diabetes food pyramid divides food into six groups. These groups vary with each other on the basis of si-e occupied in the pyramid.
Q. Do algae reproduce asexually or sexually? There are algae that reproduce asexually, There are algae that reproduce sexually and. In unicellular algae reproduction is usually
Principles of behaviour change communication - BCC should be integrated with program goals from the starting. BCC is a necessary part of diabetes prevention, care and support p
Describe frequently respiratory infactions to recoganize congenital heart disease ? Frequent Respiratory Infections: Respiratory infections that are frequent, severe and diffic
ECONOMI C IMPORTANCE OF WILD LIFE - (i) Plants - Produce food. Provide Timber, paper, gums, drugs, pigments, fibres, rubber, oils, condiments & fuel. Release O
CELL MEMBRANE As discrete units of life all living cells are separated from each other and from their external environment by an extremely delicate (75 A to 100 a= 0.00075 to
What is the significance of the -R group (variable radical) in an amino acid molecule? The -R group, also known as a lateral chain, is the variable part of the amino acid molec
what is the classification of protozoa
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