When the body's physical barriers against injury and infection are breached, the cellular and chemical components of the immune system take over. Yet these protective forces sometimes make mistakes. This book describes elements of the immune system, problems that can occur, and manmade ways to supplement the immune process.
"These series titles provide overviews of their respective subjects. The appealing layout includes large fonts, many color photographs, and simple diagrams."
-- School Library Journal ( September 2002)
Price: US $29.15