Category - Non Fiction / Science

Format - Hardcover

Condition - Good

Listed - 3 months ago

Ships From - New York

Est. Publication Date - Jan 2009

Your Body Battles a Skinned Knee

Publisher Description

Ouch! You know that a skinned knee hurts. But did you know that it's the start of a battle? Your body has to work quickly to protect you from a germ invasion. Nerve cells sound an alarm that you're hu...