Disney Educational - Bill Nye The Science Guy - Germs
Humans are surrounded by germs of all kinds, and some get inside the body, causing the immune system to activate and help get rid of the intruders. Bill Nye explains about the different kinds of germs, using models made from foam. Bacteria, viruses, fungi, and protozoa can cause some rather nasty illnesses, but the body has many defenses against their invasion.
The word germ is defined as 'a microbe that causes disease'. The vast majority of microbes do not infect us at all: it is pathogens that make us ill. These include bacteria, viruses, protozoa, fungi, worms, and prions. Living with Germs not only looks at all of these in detail, but also at the defense mechanisms by which we come to terms with pathogens, whether by eliminating them, stopping them from eliminating us, or simply learning to live with them. This is the first book to look at the subject of immunology in a relevant and approachable style....
