Paranoid about parasites? Best avoid the upcoming film "Prometheus," a quasi-prequel to the 1979 horror film "Alien" that hits American theaters June 8. The "Alien" franchise is responsible for giving ...
During Africa’s dry season, when mosquitoes are scarce, malaria parasites in human blood turn their genes on and off to keep numbers low so infection doesn’t set off alarm bells for the immune system, ...
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