Neutropenia
Neutropenia is a condition with low neutrophil (white blood cell) levels, increasing infection risk. Seek help if you have neutropenia and a fever.
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White blood cells
White blood cells are part of your immune system. They help detect and deal with infections. Learn about health problems involving white blood cells.
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Blood and blood vessels
Blood flows through blood vessels to carry oxygen, nutrients and waste around the body. Find out about different types of vessels and role of blood.
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Multiple myeloma
Multiple myeloma develops when plasma cells build up abnormally in your bone marrow. Currently there's no cure but treatment is available.
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