商品簡介
Explores the role that the immune system plays in the function of the body, describing the different parts of the body that provide protection against injury and disease, including the skin, white bood cells, the lymph glands, and antibodies in the blood. Explores the role that the immune system plays in the function of the body, describing the different parts of the body that provide protection against injury and disease, including the skin, white bood cells, the lymph glands, and antibodies in the blood.
