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...circulating around the body, lymphocytes have the opportunity of encountering the antigen that they can actually recognise. One consequence of this is that most lymphocytes are never called upon to fight infection. They are simply there just in case they are needed to combat a new strain of pathogen that might enter the host. We’re going to look at how B cells and T...

...circulating through the core. Remember that, although the fission had been successfully stopped, the fission products within the fuel elements would be extremely active, creating a great deal of heat from radioactivity. In addition to the fuel rods situated within, there were spent fuel rods within the building of reactor 4. These also needed cooling due to the...

...circulated to politicians, the impact in terms of influence on policy of this conference was negligible (Durant, 1999). However, some valuable lessons were learnt, including: the necessity for a political commitment to take lay-panel recommendations seriously; the importance of choosing a topic where a debate is timely and opportune. However, setting up the first UKNCC at...

...circulating on eBay! Can our fearless forensic investigators find the source of the leak and ensure a successful prosecution? Watch the short video The Case of the Stolen Exams, taking notes of what you see so that you can answer the following question: Can you see any problems with the investigation? Write down all the issues that you think might be a problem for...