Summarize the following excerpt and practice challenging words by chunking them for fluency: After about a decade of studying BSE, a new threat emerged. A cow that was infected with BSE could potentially become part of the British food supply. At first, experts didn’t think that BSE could be passed along to humans through the consumption of beef (which is made of the cow’s fat and muscle tissue, not parts of the central nervous system). However, in 1995 they diagnosed a human with Creutzfeldt-Jakob disease, the human form of BSE.