An ideal way to study the internal organs of a mammal with out the need for dissection. In this sheep organ survey set students can observe dissected mounts of the heart, kidney, brain, and eye.The kidney is triple injected with arteries in red, veins in blue, and urethra in yellow. The brain is injected to show the arteries in red. Organs are sectioned and labeled for easy identification. Includes a set of guides. 13" x 9" x 21/2". Grades 7-12.