Reed and his colleagues injected volunteers with with blood from yellow fever victims.

I asked two volunteers, Private John R. Kissinger and clerk John J. Moran, why they were agreeing to such life-threatening experiments. They said "We volunteer solely for the cause of humanity and in the interest of science".

None of these subjects came down with yellow fever.

To understand why this was, continue with the tutorial.


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© AJC 1995