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  • Immune System for Parents


    The immune system, composed of special cells, proteins, tissues, and organs that protect against germs and microorganisms, is the body's defense against disease.

  • Immune System for Teens


    The immune system is made up of special cells, proteins, tissues, and organs that defend people against germs and microorganisms.

  • Aplastic Anemia for Parents


    Aplastic anemia happens when the body can't make enough blood cells. A person can develop anemia, infections, and bleeding. Treatments can help with most kinds of aplastic anemia.

  • Splenectomies for Parents


    A splenectomy is surgery to remove an injured spleen.

  • Cancer Basics for Teens


    Get the basics on cancer and cancer treatments in this article.

  • Blood Transfusions for Teens


    Millions of people a year get blood transfusions in the United States. This article explains why people need them and who donates the blood used.

  • Neutropenia for Parents


    Certain cancers, or cancer treatment, can weaken the immune system, requiring a child to stay home to avoid exposure to germs. Here are ways to help your child make the best of it.

  • Juvenile Myelomonocytic Leukemia (JMML) for Parents


    Learn about this rare type of cancer, which usually affects kids under 4 years old.

  • Lungs and Respiratory System for Parents


    We need the respiratory system for breathing. Find out how it works.

  • Newborn Screening Tests for Parents


    Newborn screening tests look for health conditions that aren't apparent at birth. Find out which tests are done.