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The legal doctrine which relieves defendants / perpetrators of liability for torts if they acted in the reasonable belief that they had to use force to defend themselves , or others ( loved ones , etc. ) , from death or great bodily harm . Theoretical Neurobiology at Caltech , which promotes integration of theoretical and experimental work in neurobiology . Because the incumbent would be able to combine networks across the two countries , and control access to final users , it would enjoy a cost position which rivals could not replicate . If it 's true that someone tried to poison Yushchenko with dioxin , then it must be assumed that the miscreant had been duped by environmentalist propaganda , which claims either that dioxin is " the most toxic manmade substance " or " one of most toxic substances known to man . It serves as a means to avoid missing important messages , which promotes good customer service to both our external and internal customers . They also found that consuming the fortified milk helped to increase blood levels of vitamin D , which promotes calcium absorption in the gut , and lowered levels of parathyroid hormone , a hormone that breaks down bone . Attaining such an ideal is greatly facilitated by the large size of the habitat which frees from limitations planned for in the small interiors of space stations .