virus

Diagram of the world continents; Central Africa is highlighted. A car…

This clip is an introduction on the development of microscopes and…

A woman speaks about her former bisexual lover. She sits on a couch and…

A man is pushed down a hospital hallway by a nurse. A black man in a…

Establishing shot of the University of Pittsburgh School of Medicine. A…

Several shots of the exteriors of large, stately buildings. A scientist…

Discussion of how germs and viruses are spread by sneezing and by hands…