Genetic disorders -- Research -- Moral and ethical aspects. Ethnic groups -- Diseases Tay-Sachs disease -- Genetic aspects Cystic fibrosis -- Genetic aspects Sickle cell anemia -- Genetic aspects

Drugs -- Testing -- Juvenile fiction. Lungs -- Transplantation -- Juvenile fiction. Cystic fibrosis -- Juvenile fiction.

Brothers -- Fiction. Twins -- Fiction. Imaginary creatures -- Fiction. Cystic fibrosis -- Fiction. Beaches -- Fiction.