is the second cause of death in the United States Heart disease is the first. Each year more than a million Americans get medical care for and over 330,000 die from the disease. is one of man’s dreaded diseases. It attacks people of all ages. kills more children than any other disease. About 4,000 children under 15 years old die of each year. half of the deaths are from leukemia. Leukemia is a of the blood forming tissues. has been observed in many forms of animal and plant life, as well as in man. More than 200 kinds of affect human ....