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Scintigraphy or nuclear medicine:
Scintigraphy was introduced in veterinary medicine in 1970s. It is highly sensitive and can detect bone damage much better than radiological identification. The technique is also being applied to evaluate vascular perfusion, pulmonary ventilation and muscle damage to measure cardiac out put and in intra-thoracic pathology. The scintigraphy involves the production of images following internal administration of radioactive pharmaceuticals to a patient. The two-dimensional image obtained by sophisticated gamma camera indicates the distribution of radioactive material in the body. Using advanced computer technology, these images can then be analyzed to provide both qualitative and quantitative data. Single photon emission computed tomography (SPECT) and positron emission tomography (PET) are advanced imaging techniques. Tomographic images of the organ or blood flow are generated using radioactive isotopes.
9. A simple and inexpensive screening method has been developed to identify individuals with HIV infection at routine medical check-ups. To study the sensitivity and specificity, t
The basic parts of RNA are the same than for DNA with two major differences. The pyrimidyne base uracil exchange thymine and ribose replace deoxyribose see the sugar, pyrimidines a
Q. How does photosensitivity in annelids, cnidarians and worms differ from insects, cephalopods and vertebrates? In the first mentioned group of animals there are photoreceptor
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Define Vitamin K-dependent carboxylation? Vitamin K acts as a cofactor in the synthesis of g-carboxyglutamic acid (Gla) from glutamic acid residues required for the normal coa
Tapetum - Anther Wall Layers Tapetum is the innermost and most important layer of the anther wall. It is generally composed of a single layer of cells. These cells completely
Digestion of Carbohydrates Digestion of food starts in the mouth itself by the action of enzyme salivary amylase and the carbohydrates present in the food, particular
DERMIS (CORIUM) - Mesodermal in origin. More developed part. Leather is obtained from dermis by tanning. Thinnest in eye lid. Connective tissue present. In it 4 types
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