ISBN-13: 9781580892094 / Angielski / Miękka / 2010 / 44 str.
Simple, humorous text and comic illustrations explain the basics of the circulatory system--the systemic, pulmonary, and coronary circuits. Readers follow a red blood cell on its journey through the body, and in the process learn how the body combats disease, performs gas exchanges, and fights plaque.