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Free research papers and essays on topics related to: parasitic

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  • Parasitic Flatworms - 1,561 words
    Parasitic Flatworms INTRODUCTION Imagine going to the doctor for a simple check up. Sure you've had some minor problems- indigestion, lack of energy, weight loss, and a bit of gas- but that's not out of the ordinary....or is it? In most cases you would be correct...but today is your unlucky day. The doctor has just informed you that you have a tapeworm parasite. PARASITIC CHARACTERISTICS By definition, a parasite is an organism that lives either in or on another organism. Infected organisms that are carrying a parasite are called host organisms- or hosts. This parasitic relationship can vary from benign to harmful- and sometimes even fatal. There are two main types of parasites: endoparasite ...
    Related: flatworms, parasitic, life cycle, different stages, meat
  • Parasitic Flatworms - 1,538 words
    ... and in vitro. The host molecules acquired by the schistosomes were in fact surface components of the erythrocyte; A, B, H, And Lewis b+ antigens were acquired by parasitic flatworm. Even more interesting was the fact that A and B antigens could be acquired from the serum of A or B positive donors in the absence of homologous erythrocytes, irrespective of the secretor status of the donor. This provided information that the blood group substances were taken up as glycolipids rather then glycoproteins. This proof was derived from an experiment done by Goldring, Kusel and Smithers ( as cited in Parasitology 1988 ) as mentioned by D. J McLaren. Schistosomula grown in vitro with a megalolipid ...
    Related: flatworms, parasitic, clean water, immune system, immune
  • Parasitic Wasps - 2,778 words
    Parasitic Wasps Malaria is one of the most prevalent and dangerous diseases known to man. It has existed for centuries and affects a myriad of people in the tropical region. Even today, with our newly discovered treatments for many of the tropical diseases, over 10% of the people that are infected with malaria each year and do not receive proper treatment die. In Africa alone, over 1 million children die each year because of malaria and new cases are reported frequently. Malaria is very dangerous and harmful to man. However, the protozoan that causes malaria has existed since man came into being. Fossils of mosquitoes that are 30 million years old contain the vector for malaria. After writte ...
    Related: parasitic, blood cells, national government, united nations, phase
  • Parasitic Wasps - 2,688 words
    ... Malaria Morbidity in Young Children Vitamin A is often deficient in individuals living in malaria endemic areas, is essential for normal immune function, and several studies show it could play a part in potentiating resistance to malaria. Studies have shown that vitamin A deficient rats and mice are more susceptible to malaria than normal animals, and this susceptibility is readily reversed by vitamin A supplementation. Also, a genetic locus, which includes cellular retinol-binding protein, influences malaria mortality and parasitemia in mice. In vitro, addition of free retinol to P.falciparum cultures reduced parasite replication in one study but not in another (Shankar A H, et al 1999 ...
    Related: parasitic, university press, alternative medicine, harper collins, rural
  • Agricultural Problems Facing The African Nations - 620 words
    Agricultural Problems Facing The African Nations Agricultural Problems facing the African Nations Africa is a nation hit by many agricultural problems. As a majority, Africa is a desert type climate. Rainfall is heavy and quick, leaving soil deeply engraved by the pounding of the rain. It falls for such a short period of time, not allowing the ground to soak up the moisture before it is evaporated into the air because of the heat. Droughts attack the nations often never providing enough food to sustain the rising population of the nations. African families are growing bigger and bigger by the year. One in every seven children is going to die before school age. That means that the nation is u ...
    Related: african, african nations, african people, agricultural, facing, problems facing
  • Aids - 1,140 words
    ... rom a few days to several weeks and is associated with fever, sweats, exhaustion, loss of appetite, nausea, headaches, soar throat, diarrhea, swollen glands, and a rash on the torso. Some of the symptoms of the acute illness may result from HIV-1 invasion of the central nervous system. In some cases the clinical findings have correlated with the presence of HIV-1 in the cerebrospinal fluid. Symptoms disappear along with the rash and other sings of acute viral disease. When the blood test for HIV-1 antibodies become available, researchers demonstrated the lymphadenopathy was a frequent consequence of infection with the virus. Scientist do not know what causes the wasting syndrome, but som ...
    Related: aids, immune system, human immunodeficiency, recent studies, regulation
  • Aids - 1,410 words
    Aids Aids by sean ross How is HIV Diagnosed? You can get tested for HIV in a number of locations -- including public clinics, AIDS organizations, physicians' offices, and hospitals. Many locations give the test for free. You can choose between anonymous tests, in which you do not give your name to the HealthCare provider, or confidential tests, in which you do give your name. Test sites should provide trained counselors who can offer you support and guidance, no matter what the test result.(Balch-97) An HIV test looks for the antibodies your immune system creates in response to the virus. These antibodies may not appear in your blood until three to six months after HIV infection. Therefore, ...
    Related: aids, aids hiv, aids research, disease control, santa monica
  • Analysis Of The Flea By John Donne - 1,103 words
    Analysis Of The Flea By John Donne Shai Steeck English 2 Essay 1 The Flea John Donne Observe a typical bar; every Saturday night sweat drenched bodies emitting alcohol and pheromones from every pore, exchange conversation, pleasantries, and yes even sex (perhaps not directly in view but certainly eluded to). Is this animalistic, barbaric behavior acceptable? Should sex be taken so lightheartedly? Or do we take it to seriously; guarding sex like it was the Holy Grail, or the secret to life itself? These questions may be to deep and pointed for most to approach, yet John Donne in his poem The Flea wades through them like the kiddy pool. In this clever poem Donne uses a flea, blood, and the mur ...
    Related: donne, flea, john donne, holy grail, saturday night
  • Analysis Of The Poem: The Fly - 637 words
    Analysis of the Poem: The Fly In the poem The Fly, much vivid imagery is employed in creating a graphic depiction of the housefly as the filthy, disease ridden scourge of man that it is. The author, having obviously spent a great deal of time observing and noting the characteristics of the housefly, creates a vivid summation of his observations and feelings about his subject. The descriptions and non-subtle metaphors are unique, to say the least. While the subject matter may seem too trivial to allow the poem to be taken seriously, it is nevertheless deserving of study. This poem shows a great deal of imagination on the part of the author. Few people would undertake such a detailed literal s ...
    Related: subject matter, most dangerous, countermeasures, literal
  • Antisocial Personality - 1,602 words
    Antisocial Personality The Antisocial Personality is (APD) is a serious disorder that affects many males and cause a great threat to families, friends, and even complete strangers. Most personality disorders may cause an inconvenience to a person▓s family and friends, but usually harm themselves more than others. Antisocial Personality Disorder contrasts from other personality disorders because the defining trait is a predatory attitude toward other people (Smith, 1999). ⌠They have a chronic indifference to and violation of the rights of one▓s fellow human beings.■ (Alterman; Cacciola; McDermott; Mulholland; Newman; & Rutherford, 2000). A common tendency of those with ...
    Related: antisocial, antisocial behavior, antisocial personality disorder, personality, personality disorder
  • Bioinvasion: The Economys Nemesis - 914 words
    Bioinvasion: The Economy's Nemesis BioInvasion: The Economy's Nemesis In today's world of war, terrorism, and economic instability, the United States has been strong and has held the world together, but BioInvasion is fast becoming a dangerous threat to our economic well being. In 1997 African ticks carrying heartwater disease; a fatal animal disease from South Africa, were found on a leopard tortoise that a reptile dealer in Florida had just purchased. Upon investigating his facility scientist found an infestation of these disease-ridden ticks. If they had not caught these they could have caused an epedemic. These exported disease, which our domesticated animals have no immunity to, could e ...
    Related: nemesis, national intelligence, armed forces, human disease, fourteen
  • Biology Instinct - 467 words
    Biology Instinct subject = biology title = Biology Instinct Insects are neumerout invertebrate animals that belong in the Phylum Arthropoda and Class Insecta. The class Insecta is divided into 2 subclasses: Apterygota, or wingless insects, and Pterygota, or winged insects. Subclass Pterygota is futher divided on basis of metamorphosis. Insects that have undergone incomplete metamorphosis are the Exopterygota. Insects that undergo complete metamorphosis are the Endopterygota. Insects have an outer bilateral exoskeleton to which the muscles are attached to and provides protection for internal organs. The body is divided into 3 main parts which are the head, which include mouthparts, eyes, and ...
    Related: biology, instinct, muscular system, reproductive system, allergic
  • Black Plague - 1,461 words
    Black Plague As a young adult I must endure many scary realities of this world. Everyday a new challenge, obstacle, fear stares me right in the eye. The sugarcoated, innocent, never never land is quickly shedding from my reality and I am faced with the truths of this cynical world. Truth. Do I know the meaning of this word? What if all I have trusted had been false, what if those endless nights I lied awake worried over the latest medical news, or any news for that matter, was all just a waste of potentially productive time? What if the world as we know it was all just a hoax and a set up to make the men in the white coats rich? According to Dr. Peter Duesberg, HIV as we know it is not the c ...
    Related: black plague, plague, deficiency syndrome, risk factor, incorrect
  • Current Status Of Malaria Vaccinology - 1,113 words
    Current Status of Malaria Vaccinology annon In order to assess the current status of malaria vaccinology one must first take an overview of the whole of the whole disease. One must understand the disease and its enormity on a global basis. Malaria is a protozoan disease of which over 150 million cases are reported per annum. In tropical Africa alone more than 1 million children under the age of fourteen die each year from Malaria. From these figures it is easy to see that eradication of this disease is of the utmost importance. The disease is caused by one of four species of Plasmodium These four are P. falciparium, P .malariae, P .vivax and P .ovale. Malaria does not only effect humans, but ...
    Related: current status, malaria, tropical africa, article published, caucasian
  • Dialectic And Spectacle In The Harrowing Of Hell - 2,225 words
    Dialectic and Spectacle in the Harrowing of Hell Medieval Literary Drama Dialectic and Spectacle in the Harrowing of Hell Roland Barthes's essay on "The World of Wrestling" draws analogically on the ancient theatre to contextualize wrestling as a cultural myth where the grandiloquence of the ancient is preserved and the spectacle of excess is displayed. Barthes's critique -- which is above all a rewriting of what was to understand what is -- is useful here insofar as it may be applied back to theatre as another open-air spectacle. But in this case, not the theatre of the ancients, but the Middle English pageant presents the locus for discussing the sport of presentation, or, if you prefer, t ...
    Related: dialectic, spectacle, social values, western culture, barthes
  • Ebola Virus - 1,107 words
    ... ltifactorial nature of viral evolution makes it difficult to predict such events. According to Doolittle, retrovirus evolution is sporadic, with retroviruses evolving at different rates in different situations. For instance, the human endogenous retroviral element is shared with chimpanzees, indicating no change in over 8 million years, whereas strains of HIV have diverged in mere decades. Endogenous retroviruses carried in the germline evolve slowly compared with infective retroviruses. Generation of new viral pathogens is rare, and often possible only because of high mutation rates that permit many neutral mutations to accumulate before selective pressure forces a change. The seeming u ...
    Related: ebola, ebola virus, influenza virus, virus, oxford university press
  • Ecology And Plague - 528 words
    Ecology And Plague Ecology is a branch of science concerned with the interrelationships of organisms and their environment. An ecosystem is a community, together with its nonliving factors existing together. Scientifically, a community consists of a collection of creatures that live in a particular place together. The Coming Plague was a novel that outlined how each epidemic has been a direct result of each step of human progression. The diseases covered in laymans terms were Machupo, Marburg, Yellow Fever, Meningitis, Lassa Fever, Ebola, Swine, Flu, Legionaires Disease, HIV/AIDS, Toxic Shock Syndrome, Hantavirus, Malaria, Seal Plague, Tuberculosis and Cholera. Humans have not been exempt fr ...
    Related: ecology, plague, yellow fever, cretaceous period, intense
  • Genetics Engineering - 1,437 words
    ... nbound probe, and placed over a piece of x-ray film. When developed, the film reveals the location of the radioactivity as a black spot. The corresponding colony on the original plate thus contains the bacteria carrying the required gene. The applications of genetic engineering are vast, probably the most well known is gene therapy in the medical world. It involves the introduction of a gene into somatic cells and enablement of its products to alleviate a disorder caused by the loss or malfunctioning of a vital gene product. Involving the latest DNA technology, it is the most rapidly advancing form of molecular medicine, which is concerned with the cause of disease at a molecular level. ...
    Related: engineering, genetic engineering, genetics, human genetics, recombinant dna
  • Hamlet Brutal Truth - 1,127 words
    Hamlet Brutal Truth Annonymous For decades, Guy Debord’s The Society of the Spectacle was only available in English in a so-called 'pirate' edition published by Black & Red, and its informative—perhaps essential—critique of modern society languished in the sort of obscurity familiar to political radicals and the avant-garde. Originally published in France in 1967, it rarely receives more than passing mention in some of the fields most heavily influenced by its ideas—media studies, social theory, economics, and political science. A new translation by Donald Nicholson-Smith issued by Zone Books last year, however, may finally bring about some well-deserved recognition t ...
    Related: hamlet, modern society, modern state, social theory, favoring
  • Has Gallo Proven The Role Of Hiv In Aids - 2,768 words
    Has Gallo Proven The Role Of Hiv In Aids? Introduction In 1982, Robert Gallo from the National Cancer Institute in the USA, put forward the hypothesis that the cause of AIDS is a retrovirus. One year later, Myron Essex and his colleagues (1) found that AIDS patients had antibodies to the Human T-cell Leukemia virus Type-1 (HTLV-I), a virus discovered by Gallo a few years earlier. At the same time, Gallo and his colleagues (2) reported the isolation of HTLV-I from AIDS patients and advocated a role for this retrovirus in the pathogenesis of AIDS. This hypothesis however, was not without a few problems: 1. While HTLV-I was accepted to induce T4-cell proliferation and cause adult T-cell leukaem ...
    Related: aids, aids research, gallo, national cancer institute, second paper
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