Proteins in the two most common types of flu virus enable them to take very different paths to entering human lungs, a finding that could lead to more directed antiviral treatments.
Indian Defence Review on MSN
Hundreds of Thousands Fell Into Unexplained Sleep During the 1918 Pandemic. A Century Later, Science Still Has No Answer
Encephalitis lethargica remains one of the greatest unsolved medical mysteries of the 20th century.
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