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Define the functions of the Macrophages
The macrophages:
1) phagocytose microorganisms and inert particles
2) secrete IL-1 (Interlukin I), TNF (tumor necrosis factor), G-CSF ('granulocyte colony-stimulating factor) and M-CSF (macrophage colony-stimulating factor).
3) Process and present the antigen to immuno competent cells.
4) Destroy old RBC, initiates catabolism of Hb.
Air Borne Diseases: A number of diseases are caused due to bacteria and virus that are carried in the air. When an infected person sneezes or coughs, there is a noticeable spr
Explain physical barrier for External Defence Mechanism - Skin It provides nice protective covering to the body. The outer layer- horny layer - contains dead keratinized cells
Oxidation Weathering by oxidation is common in rocks which are rich in the elements that can be easily oxidised e.g. iron. Iron as Fe 2+ present in a mineral is oxidised to Fe
What do all optical instruments and devices have in common?
Cholagouge action and Absorptive function of bile Cholagouge action: Bile acts as its own stimulus. Bile salts are absorbed from the intestine, carried to the liver and stimula
lable the direction of increasing frequency and the direction of increasing wavelength on the em.
Metamorphic rocks Igneous and sedimentary rocks that have been altered from their previous condition through the combined action of heat and pressure below Earth's surface are
In what layer of the Earths atmosphere does most of our weather occur? Troposphere
Advantages of water in chemical weathering Water is an essential factor of chemical weathering and when it contains dissolved salts and acids it is all the more effective. It
(a) What are Agent-based models? What are turtles and patches? How are turtles programmed in netlogo? If you have a background in computer programming or if you are brave, play ar
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