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As discussed earlier in this document , the Harvard-Tuskegee study has stated that a ban on specified risk materials , including cattle brains , spinal cord and vertebral column , from inclusion in human and animal food would reduce the very few potential BSE cases in cattle by a further 88 percent and potential human exposure to infectivity in meat and meat products by a further 95 percent . When natural scientists primarily used " natural landmarks " as its source material , archaeologists relied on " archaeological finds " , which were invested with scientific value but also became symbols of national collective memory . Teen Read Week 's objectives are to give teens an opportunity to read for the fun of it , allow teens to select their own reading materials , and to help teens get in the habit of reading regularly and often . The LII has explored new ways of assembling and presenting expert commentary on law topics , together with underlying primary source material , in the digital environment . The new pheromone material , called CheckMate DBM-F , will require extensive evaluation before it can be released for use by growers , but Liu thinks it could become an effective , less costly alternative . Support for literacy teaching , based on consultative relationships , between the PLS and literacy administrators , is generally limited to selection and provision of appropriate reading materials , rather than involvement in any other aspects of literacy programmes . Information and comments were sought on the following five aspects of the BSE feed regulation : feasibility and impacts of excluding high risk materials , such as brain and spinal cord , from rendered animal products ; use of poultry litter in cattle feed and impacts of banning such use ; impacts of introducing new labeling requirements for pet food ; methods to prevent cross-contamination between prohibited and non-prohibited material ; use of plate waste in ruminant feed and impacts of eliminating such use . While writing up her year 's work , she discovers her research question , " What are the effects on students ' reading abilities and attitudes when they can self-select reading materials , give videotaped ' Book Commercials , ' self evaluate and set their own goals ? The studies are unclassified , developed entirely from open source material , and address the C3 infrastructure of over 100 countries . Geologic units accessible are diverse and range from Noachian Plateau dissected , hilly , cratered and subdued cratered units ; to Hesperian ridged plains and channel materials ; to the Vastitas Borealis Formation ; to Amazonian smooth plains , channel materials , volcanics and knobby materials ; to the Medusae Fossae Formation . Emphasis in three areas : ( 1 ) general planning and procedures to solve reading problems , ( 2 ) laboratory practice in the application of reading materials , and ( 3 ) evaluation of techniques . Prohibited cattle materials include specified risk materials , small intestine of all cattle , material from nonambulatory disabled cattle , material from cattle not inspected and passed for human consumption , and mechanically separated ( MS ) ( Beef ) . " Before you web-based primary source material , consult this guide . These materials are usually limited to required reading materials , videos , or cassettes for a particular class , although models , slides , etc. may also be placed on reserve . Newspaper articles are source material , not scholarly , but are good for current topics and current information on topics such as the sound recording industry . The FSIS ' interim final rule requires that specified risk materials , small intestine from all cattle , tissue from nonambulatory disabled cattle , and MS ( Beef ) not be used for human food .