Viral-Infected Human Cells Often Send Out Special Proteins That Serve

Multiple Choice

Viral-infected human cells often send out special proteins that serve as an early warning system to uninfected cells. In response, the uninfected cells develop antiviral proteins that protect them. The early warning proteins sent out by viral-infected cells are

A) complement.
B) interferon.
C) antibodies.
D) antigens.
E) antibiotics.