By altering the function of regulatory genes virus can risk cancer.
Certain infectious agents, such as viruses, bacteria, and parasites, can increase the risk of cancer . In order to reproduce and make more viruses, a virus must enter a living cell and take over the cell's machinery. Some viruses accomplish this by embedding their own DNA (or RNA) into the host cell's. So when DNA or RNA impacts the genes of the host cell, it can cause the cell to become cancerous.
Most viruses only affect specific cells in the body, such as cold virus viruses that affect the nose and throat lining. That is why certain viruses are just associated with specific types of cancer.
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One must begin with a sense of the richness and variety of traditional Vietnamese religion. Time was when the Vietnamese believed they inhabited a world alive with gods and spirits. Little distinction was made between the worlds of the living and the dead, between the human, the vegetable, the animal, and the mineral realms. If fate smiled upon one, nature, too, would be kind; but if one was cursed by fate, then even the elements would be hostile. The stones, the mountains, the trees, the streams and the rivers, and even the very air were full of these deities, ghosts and spirits. Some were benevolent, some were malicious; all had to be conciliated through ritual offerings and appropriate behavior.
So life was regulated by a vast array of beliefs and practices, taboos and injunctions, all designed to leash in these powers that held sway over human life. How much and in what way religion guided one's daily conduct depended on one's background. Confucian scholars, who prided themselves for their rationality, often scoffed at what they considered the superstitious nature of peasant religion. But they, too, were ruled by religious ideas. Different occupational groups had their own beliefs and practices. Fishermen, who pursued a much more hazardous livelihood than the peasants, were notorious for the variety and richness of their taboos. Some beliefs were shared by all Vietnamese. Others were adhered to only in one region or a small locality. Some were so deeply embedded in the culture as to be considered a part of tradition, holding sway over believers and non-believers alike.
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B. age stereotype.
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Stereotype refers to a generic mental image about the members of a group, reflecting an overly simplified view, prejudiced mindset, or uncritical judgment. When a person equates aging with frailty and deterioration, he equipped with the capacity to perpetuate ageism because he tends to find ill health to be undesirable in old age and do not realize the wide diversity of older adults.
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because the desert in africa was hot and dry and the had to travel over long distances which made it hard
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