Mice share more than 95 percent of their genes with humans. Researchers have used mice to study leukemia, improving the cancer survival rate in the United States. Find out more in Animal Testing, a title in the Debating the Issues series. Each title in the series features easy-to-read text, stunning visuals, and a challenging educational activity. A unique book code printed on page 2 unlocks multimedia content. These books come alive with video, audio, weblinks, slideshows, activities, hands-on experiments, and much more.