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The explosive spread of the influenza virus during the 1918 pandemic that killed some 20 million people worldwide was likely enabled by the unique structure of a protein on the virus 's surface , researchers are reporting . Renewed efforts must be made to stop the worldwide spread of the expertise and technology to develop biological weapons , according to a joint statement today ( 8 November 2002 ) by the Presidents of the United States National Academy of Sciences and the Royal Society . So , there will be vast spreads of the tree of life where we are uncertain whether the species form true monophyletic groups , which will be left un-named , or be named in the old Linnean Nomenclature . Lines of cones indicate where the crust has been weakened by the spreading of the rift zone . For those with suspected or diagnosed NHL , CT scans may be taken of the neck , chest , abdominal , and / or pelvic regions to help detect enlargement of certain lymph nodes or spread of the malignancy to certain organs . Discarding used needles and not sharing them reduces the spread of the AIDS virus and diseases like hepatitis . Just as an aside : Had the teacher not stepped in and put an end to the spreading of the Faith , the teacher would , and quite rightly , be subject to disiplinary action for allowing the classroom discussion to continue in that direction . The atmosphere of globalization and the spread of the values of market economy and competitiveness disassemble the last concrete restraints that have been required by the social circumstances of the intellectual-political conflict that had been going on during the cold war in such a manner that social relationships within the scope of countries themselves and at the international relations ' level , have become unchained by the rules that would protect the minimia of the rights of the oppressed in a free dignified living ; these relations started to adopt more brutal forms . The lack of detail and contrast in Figure 4 ( a ) is due to spreading of the diffracted light and the inherently low numerical aperture of the optical system . The questions under discussion — the spreading of the strike and the demands to be addressed to the duma — were of a purely practical nature and were debated briefly , energetically and in a businesslike manner . He was , at this time , having great success in his spreading of the gospels around the south of England , to the increasing annoyance of Old Nick .