The Immune System at WorkVideo Cassette - 2004 ;
Explores germs, bacteria and toxins, and the body's natural defenses against them. It explains the difference between bacteria and viruses, and illustrates how the immune system protects against them. It also explains what happens when the immune system falters, and how vaccinations and other medical techniques help fight harmful germs and bacteria.
Publisher: Boca Raton, FL : Allegro Productions, 2004 ; Lawrenceville, NJ : Cambridge Educational [distributor]
Characteristics: 1 videodisc (17 minutes) : sound, colour ; 4 3/4 in. (DVD)