Crisis in the Red Zone: The Story of the Deadliest Ebola Outbreak in History, and of the Outbreaks to Come

by Richard Preston

Human blood is thick with antibodies. A person’s blood is about 2 percent antibodies by volume, and they really do thicken the blood. A droplet of blood large enough to cover a person’s little fingernail contains about 50,000,000,000,000,000,000 (fifty quintillion) individual antibody proteins.