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process of producing immunity and method of vaccination that consists of introduction of the infectious agent onto an abraded or absorptive skin surface instead of inserting the substance in the tissues by means of a hollow needle, as in i...
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About 125 pages (37,467 words) in 5 products |
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suspension of weakened, killed, or fragmented microorganisms or toxins or of antibodies or lymphocytes that is administered primarily to prevent disease. A vaccine can confer active immunity against a specific harmful agent by stimulating ...
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About 109 pages (32,667 words) in 5 products |
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in popular legend, a bloodsucking creature, supposedly the restless soul of a heretic, criminal, or suicide, that leaves its burial place at night, often in the form of a bat, to drink the blood of humans. By daybreak it must return to its...
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About 198 pages (59,519 words) in 4 products |
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Mass media is responsible for teen violence because it feeds our culture's fixation on violence. It seems that violence has become a part of everyday American life. Even if teens aren't directly touched by violence, they are bombarded with...
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About 666 pages (199,812 words) in 23 products |
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Branch of microbiology that deals with the study of viruses. Viruses were not closely examined until 1892, when a Russian bacteriologist observed that the agent of tobacco mosaic disease could pass through a filter that did not permit the ...
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About 82 pages (24,682 words) in 3 products |
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the use of computer modeling and simulation that enables a person to interact with an artificial three-dimensional (3-D) visual or other sensory environment. VR applications immerse the user in a computer-generated environment that simulat...
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About 117 pages (34,957 words) in 9 products |
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an official religion of Haiti (together with Roman Catholicism). Vodou is a creolized religion forged by descendents of Dahomean, Kongo, Yoruba, and other African ethnic groups who had been enslaved and brought to colonial Saint-Domingue (...
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About 158 pages (47,488 words) in 5 products |
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any of various processes and phenomena associated with the surficial discharge of molten rock, pyroclastic fragments, or hot water and steam, including volcanoes, geysers, and fumaroles. Although volcanism is best known on Earth, there is ...
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About 307 pages (92,077 words) in 11 products |
1-8 for Research Topics
