Blood cells:

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The content of the image is 'Blood cells:', it is likely the start of a homework question.
Answer
Blood cells carry oxygen and nutrients to living cells and take away their waste products.
Blood cells are cells produced through hematopoiesis and found mainly in the blood, that carry oxygen and nutrients to living cells and take away their waste products.
Answer for screen readers
Blood cells are cells produced through hematopoiesis and found mainly in the blood, that carry oxygen and nutrients to living cells and take away their waste products.
More Information
Blood cells are primarily made in the bone marrow.
Tips
It is important to differentiate between red blood cells, white blood cells, and platelets. Each has their own function.
Sources
- Blood and the cells it contains - NCBI - ncbi.nlm.nih.gov
- Blood cell - Wikipedia - zh.wikipedia.org
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