In genus Cancer, one particular type of body cell begins to arrive and multiply ab approach patternly, eventu ally skeletoning a mass of renegade cells that doctors gripe a malignancy or a malignant tumour. low a microscope, malignant crabmeat cells look different from their normal neighbor cells, and they act differently, too. They argon aggressive and invasive; they dont obedience the bodys established boundaries between cells and tissues. Many of these malignant cells manufacture iconoclastic chemicals called proteases that allow them to invade neighboring body areas. Others spread into the blood stream and lymph vessels, and they establish secondary sites of cancer growth in organs far from the site of the primary tumor. As they grow, cancer cells whitethorn also produce abnormal hormones and other types of chemicals that affect the functions of the whole body. Some cancer cells can even modify their interior chemical reactions, allowing them to escape destruction by the bodys immune dust or to counter the effects of anti-cancer medications.
Cancer occurs when a cancerous tumor originates from a single abnormal cell that multiplies out of control. The skipper cancer cell reproduces itself through a process called mitosis to plaster cast two cancer cells. These two cancer cells divide to form four, then eight, then 16, and so on. In the end, it usually takes a mass of at least 100 million cancer cells to form a detectable malignant tumor.
Many causes of Cancer are:
Chemicals
The US Environmental Protection Agency has formulated a long list of chemical carcinogens. Some of these - including tar, polynuclear aromatic hydrocarbons, phenol, nitrosamines, and vinyl radical chloride - are components of cigarette smoke and cause 85% of all lung cancer deaths. Other chemical carcinogens may not be as well known.
For example, the ethyl alcohol in alcohol-dependent beverages has been linked to esophageal cancer, while the...
A penny-pinching essay. But I wish there was a little more to it. What cancer is and how its caused is good, but I was left wanting more.
My Grandfather died of pancreatic cancer, so this was kind of hard to read. But a good essay nonetheless. Bravo!
My mum also had Cancer, yet she is motionlessness here today. I find talking about cancer hard, yet maybe not as hard as you might, but thanks for the comment, it was brave of you and i appreciate it really much.
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