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  • Blood Types for Teens


    Blood might look the same and do the same job, but tiny cell markers mean one person's body can reject another person's blood. Find out how blood types work in this article for teens.

  • Blood Types for Parents


    Categorizing blood according to type helps prevent reactions when someone gets a blood transfusion. Find out how blood types work.

  • Word! Blood Type for Kids


    Every person has a blood type.

  • Word! Glucagon for Kids


    Glucagon is a hormone that raises the level of glucose (a type of sugar) in the blood.

  • Definition: Glucagon for Teens


    Glucagon is a hormone that raises the level of glucose (a type of sugar) in the blood.

  • Definition: Insulin for Teens


    Insulin is a hormone that lowers the level of glucose (a type of sugar) in the blood.

  • Definition: Insulin for Parents


    Insulin is a hormone that lowers the level of glucose (a type of sugar) in the blood.

  • Definition: Glucagon for Parents


    Glucagon is a hormone that raises the level of glucose (a type of sugar) in the blood.

  • A to Z: Hypertension, Primary for Parents


    Learn about types of high blood pressure and conditions that can affect the heart and blood vessels.

  • A to Z: Acute Lymphoblastic Leukemia (ALL) for Parents


    Learn about different types of leukemia and cancers that affect the blood and bone marrow.