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How does the inflammation mechanism work?
When some tissue injury happens histamine and other vasoactive substances (known as mediators of inflammation) are released, they cause vasodilation and the blood flow to the affected site enhances. Granulocyte leukocytes present in the blood are attracted to the site of the injury by substances called as chemotactic factors also released by the injured tissue and by the active granulocytes in the area. The granulocytes exit the capillaries by diapedesis, i.e., using pseudopods. Macrophages show in the region is activated too. These cells flood the extracellular space of the affected area trying to kill or eliminate harmful agents, to stop tissue necrosis and to isolate the damaged tissue.
Sickle cell anaemia in man is caused by a defective chain of haemoglobin. The abnormal haemoglobin known as MbS differs from natural haemoglobin (HhA) in one amino acid. A substitu
In humans, starch digestion begins in the buccal cavity, but stops in the stomach .Why?
Q Is the tubular-dorsal nervous system of chordates associated to radial or lateral symmetry? How does that explain the complexity level of the nervous system reached by the verteb
DNA Replication Deoxyribonucleic acid (DNA) is the carrier of genetic data for all living creatures. An organism's genome, made of DNA, encodes the genetic blueprint for buildi
what are alleles
Q. Explain Brachial or Radial Approach ? This technique involves performing the coronary angiogram through the right brachial artery in the right ante-cubital fossa. Usually a
what is the opposite of yield? A.grow B.attack C.ask D.answer
How does aldosterone act and where is it produced? Aldosterone is a hormone that acts upon the nephron tubules stimulating the resorption of sodium. Thus it contributes to the
write about complementary genes
What is the karyotype found in Down syndrome? Down syndrome is the aneuploidy that is a numeric alteration of chromosomes within the cells compared to the normal number of chro
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