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Define Natural killer cells (NK cells)
They are large sized lymphocytes, specifically equipped to kill virally infected cells, some of the virally infected cells acquire a special glycoprotein on their surface which signals their neighbouring cells that they are in trouble and they need help.
The NK cells are especially receptive to this cry for help because they have surface proteins which are very similar to the ones which have glycoprotein coatings. When the 2 components come together in contact, the NK cells would release lethal substances which lead to the death of infected cell. The infected cell is killed and it has a chance to multiply. The major drawback of this process is that the host cell gets sacrificed.
Media and Scientific Outlook in Culture: Apart from sharing of deeper values through history and continuous interaction, the contribution made by all sections of the people i
Maintain the Calcium Levels of Body– Function of Kidney Maintain the body’s calcium levels. Along with parathormone and calcitriol, kidney helps the body to absorb calcium.
Experiment of Making a model of a simple flower By Using of modelling clay, coloured paper and toothpicks make 3D-dimensional models representing the parts of a typical flower.
Explain Development of Agranulocytes Agranulocytes, we know, are the monocytes and lymphocytes. Agranulocytes develop in the bone marrow and thymus. They start as stem cells.
Stereo isomerism:- Stereo isomerism occurs when the same compound due to different spatial arrangement of the groups attached to its asymmetric carbon atom exists in m
A field trip to study erosion Find some place in the locality where running water has complete damage by cutting gulleys. Take the class to study the erosion. Why was it caused
what is the speed and velocity of a car that travels 32 meters to the east and 12 meters in the same direction? the total time of travel in 3.0 seconds
Amphoteric : Amino acids having the characteristics of an acid and a base.
what are the measurable causes of weather and how does weather impact our world?
Corrosive Substances : These substances cause severe damage by chemical action when in contact with living tissue or in case of leakage, destroy /damage other materials. Mineral a
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