The surface of viruses includes many copies of one type of protein that binds, or adsorbs, specifically to multiple copies of a receptor protein on a host cell. This interaction determines the host range of a virus and begins the infection process (Figure 6-15).
Civil rights leader Andrew Young, left, and others on the balcony of the Lorraine Motel point in the direction where gunshots came from after the assassination of civil rights leader Martin Luther King Jr. on April 4, 1968.
Abraham Lincoln, the 16th President of the United States, was assassinated by John Wilkes Booth on Good Friday, April 14, 1865, while attending the play Our American Cousin at Ford's Theatre in Washington, D.C., as the American Civil War was drawing to a close.