Friday, February 17, 2012

When Viruses Attack

It's that time of year again.  The time of year that tissues fly off the shelves, chicken noodle soup is in high demand and more people are using their sick days.  Various viruses are circulating through classrooms, offices and university campuses and they can't be stopped.

In this segment of The Secret of Life, you'll watch a virus attack a healthy cell through a microscope.  Viruses are known to continue to replicate until they completely break apart the host cell and are able to start spreading throughout the body, destroying other healthy cells along the way.  The clip also shows how white blood cells in the immune system overpower a virus and create antibodies that fight and kill the same type of virus shall it ever return.

Watch the clip from The Secret of Life here.