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Free research essays on topics related to: tissues

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  • Mutations In Nature Evolution Of Man
    1,562 words
    ... iru's is replicated millions of times over, the cell bursts and the new viruses are released to continue the cycle. The body's natural defense against such cell invasion is to release certain proteins, called antigens, which "plug up" the receptor sites on healthy cells. This causes the foreign virus to not have a docking point on the cell. This process, however, is slow and not effective against a new viral attack. Genetic engineering is improving the body's defenses by creating pure antige...
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  • Hepatitis C Illegal Drugs
    1,264 words
    My uncle was not the only person to become infected with the hepatitis C virus, but in fact many people are presently struggling to keep it under control. Today four million Americans are infected with the hepatitis C virus and there are thirty thousand new cases of this virus found each year (Turkington 9). Hepatitis C takes ten thousand lives each year just in the United States, and without effective treatment the death rate is expected to triple in the next fifteen years (Turkington 9). Seven...
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  • Abnormal Cell Growth Leading To Cancer
    1,619 words
    Cancer is the second leading cause of death in the United States. Half of all men and one-third of all women in the U. S. will develop cancer during their lifetimes. Although it is common knowledge that cancer is generally inherited, this paper will further explore the causes and what happens on a cellular level when cancer develops in the human body. Basics of signal transduction Cell communication, or signal transduction, is simply the means by which cells in the body respond to signals coming...
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  • Ph Of 5 Sulphur Dioxide
    1,087 words
    Acidity is measured using a pH scale, with the number 7 being neutral. A substance with a pH value of less than 7 is acidic, while one of a value greater than 7 is basic. A substance with a pH of 6 is 10 times more acidic than another with a pH of 7. Usually the pH of 5. 6 has been used as the baseline in identifying acid rain, although there has been much debate over the acceptance of this value. Interestingly enough, a pH of 5. 6 is the pH value of carbon dioxide in equilibrium with distilled ...
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  • Protozoa In 1834 Cells
    510 words
    1. Robert Hooke - In 1662, he observed tiny compartments in the cork of a mature tree and gave them the Latin name cellular (meaning small rooms). This was the origin of the biological term cell. 2. Anton Von Leeuwenhoek - By the late 1600 s, he had observed diverse protestant, sperm, even a bacterium - an organism so small it would not be seen again for another two centuries. 3. R. J. H. Dutrochet - French botanist who prepared plant cells and studied them between 1824 and 1830. He discovered a...
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  • Type I Diabetes Insulin Injections
    1,472 words
    Abstract Diabetes is a disease that affects 18. 2 million people in the United States alone. This disease results when there is a high level of sugar in the blood for an extended period of time. It can be controlled by diet, exercise, pills and insulin injections. There are three main types of diabetes -- Type I, which affects primarily the younger population; Type II, which primarily affects the population above 40; and gestational diabetes, which affects women during the third trimester of the...
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  • Room Temperature High Temperatures
    688 words
    Silicon is one of mans most useful elements. In the form of sand and clay it is used to make concrete and brick; it is a useful refractory material for high-temperature work, and in the form of silicates it is used in making enamels, pottery, etc. Silica, as sand, is a principal ingredient of glass, one of the most inexpensive of materials with excellent mechanical, optical, thermal and electrical properties. Hyperpure silicon can be doped with boron, gallium, phosphorus, or arsenic to produce s...
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  • American Cancer Society Red Blood Cells
    869 words
    My friend, Matt, was diagnosed with cancer in May 2002. I was shocked when Matt's girlfriend, Amber, told me that he had cancer, because Matt was only twenty-three years old when diagnosed. The type of cancer Matt has is called Leukemia, which is cancer of the white blood cells. This cancer starts in the bone marrow but can then spread to the blood, lymph nodes, the spleen, liver, central nervous system and other organs. Cancer affects many people each year including my grandmother who had cance...
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  • Gene Therapy Ovarian Cancer
    1,059 words
    Argumentative Essay: Gene Therapy Table of Contents Title Page 1 Table of Contents 2 Introduction 3 Why is Gene Therapy Better in Treating Cancer? 3 Conclusion 5 Works Cited 7 Introduction Today, when people get sick, they visit doctors and then they are given a prescription of what kind of medication to take or what kind of therapy they are supposed to under in order to get well and most of the time, patients do get well. There are times wherein patients do not get entirely cu...
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  • Running Head Muscular Dystrophy
    934 words
    Running head: Duchenne's muscular dystrophy Name: University: Lecturer: Date: Duchenne's muscular dystrophy Outline of contents Contents page Abstract 3 Introduction 4 Normal anatomy / physiology of the muscular system 4 Symptoms of Duchenne muscular dystrophy 5 Causes of Duchenne muscular dystrophy 5 Diagnosis of Duchenne muscular dystrophy 5 Treatment of Duchenne muscular dystrophy 6 References 7 Abstract Duchenne muscular dystrophy is a muscular condition characterized by muscle enlargement a...
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  • Parts Of The Body Brain Tumors
    665 words
    The body normally forms new cells only when they are needed to replace old or damaged ones. If something happens to disturb this controlled process, abnormal or excessive cells are produced. When this occurs a tumor is developed. This is known as cancer. When a tumor is developed on the brain, it is called a brain tumor or brain cancer. Brain tumors can be benign or malignant (benign being not cancerous and malignant being cancerous). Both types can be deadly when dealing with the brain. Benign ...
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  • Affected Area Bursitis Joint
    513 words
    Does it hurt Bursitis Bursitis Does it hurt to move your arm? Is it tender and radiating pain to your neck and finger tips? Do you have a fever? If you answered yes to two or more of these questions then you may have typical joint injury called bursitis. Bursitis is an inflammation of the bursa that is easily prevented, detected and treated. Bursitis is a common condition that can cause much pain and swelling around an affected bursa. A bursa is a sac between body tissues that move against each ...
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  • Successfully Cloned Clone Humans
    1,359 words
    Cloning: Right Or Wrong? Cloning, humans have recently achieved the ability to clone animals. What exactly is cloning? The term clone refers to a group of organisms that are genetically identical. Now don t get me wrong cloning has been going on for hundreds of millions of years its just that recently humans have unlocked the mysteries behind cloning. Cloning first began when the very first cell that grew and evolved into what we are today, depending on your views of evolution or if you believe ...
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  • Soluble Vitamins Fat Soluble
    710 words
    Vitamins In the early 20 th century the discovery of vitamins began. Today there is a chance that there are some vitamins that are still undiscovered. The definition of vitamin is: one of several substances necessary for animal nutrition, and occurring in minute quantities in natural foods; numerous types have been distinguished, and designated by the letters of the alphabet. Each and every living animal needs vitamins to grow and be healthy. Since the human body can t produce vitamins naturally...
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  • Insulin Dependent Diabetes Mellitus Blood Sugar Levels
    365 words
    Diabetes This disease is caused by defective carbohydrate metabolism. It causes large amounts of sugar in the blood and urine. It can damage the kidneys, heart, eyes, limbs, and endanger pregnancy. About five percent of the United States population has it and about half are undiagnosed. A diabetic that is treated life span is lowered by one-third There are two types of diabetes. Type I, insulin-dependent diabetes mellitus (IDDM). And type II, non-insulin-dependent diabetes mellitus (NIDDM). Type...
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  • Ebola Hemorrhagic Fever Viral Hemorrhagic Fever
    772 words
    The Ebola virus, also know as Ebola hemorrhagic fever is a disease caused by viruses from four different families of viruses: 1) filo viruses, 2) arena virus, 3) flava virus, 4) bunyaviruses. The usual host for most of these viruses are rodents or anthropoids (such as ticks and mosquitoes). In some cases, such as the Ebola virus, the natural host for the virus is unknown. All forms of viral hemorrhagic fever begin with a fever and muscle aches. Depending on the particular virus, the disease can ...
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  • Lymphatic Filariasis Intestinal Parasites Elephantiasis
    297 words
    My report is on elephantiasis. It is a disease that is mostly found in the tropics. This disease is a condition in which a part of the body becomes grossly enlarged due to a thickening of the skin and the underlying tissues. It results from a long term interference with the flow of lymphatic fluid away from these tissues. The most frequently affected part is the leg. The most common cause of lymphatic obstruction is flares. Filaries is caused chiefly by the species Wuchereria. When you have elep...
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  • Digestive Enzymes Kinetic Energy
    788 words
    Introduction Enzymes are Enzymes Enzymes Essay Introduction Enzymes are the sparks that start the essential chemical reactions our bodies need to live. They are necessary for digesting food, for stimulating the brain, for providing cellular energy, and for repairing all tissues, organs, and cells. There are three types of enzymes: metabolic enzymes, digestive enzymes, and food enzymes. Metabolic enzymes catalyst, or spark, the reactions within the cells. The bodys organs, tissues and cells are r...
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  • Gene Therapy Germ Cells
    1,087 words
    How does gene therapy work? All life contains genetic information in the form of DNA. DNA can be reproduced and passed on to subsequent generations. A gene is a stretch of DNA that contains the blueprint for the sequence of amino acids making up a particular protein. Proteins are vital because they are used in catalyzing various biochemical reactions, they act as messengers, they regulate cell growth, development and reproduction, transport oxygen in the blood and are a defense against diseases....
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  • Millions Of People Defective Genes
    847 words
    In the past couple years, the topic of genetic cloning has been under heated debate by people all over the world. This debate began when Scottish scientists cloned a sheep named Dolly. The event made headlines around the world and was seen as the beginning of the end for the human race, as we were dawning on a new era in science, one that was to be filled with immoral acts that were seen as scientifically impossible a few years ago. Some believe that cloning is unethical and unnatural, and shoul...
    Free research essays on topics related to: human cloning, stem cells, defective genes, spinal cord, millions of people

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