Your blood is living tissue made up of liquid and solids. The liquid part, called plasma, is made of water, salts, and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells, and platelets.
Red blood cells deliver oxygen from your lungs to your tissues and organs. White blood cells fight infection and are part of your body's defense system. Platelets help blood to clot when you have a cut or wound. Bone marrow, the spongy material inside your bones, makes new blood cells. Blood cells constantly die and your body makes new ones. Red blood cells live about 120 days, and platelets live about 6 days. Some white blood cells live less than a day, but others live much longer.
- Immune Cell Therapy Shows Promise Against Deadly Blood Cancer (09/02/2015, HealthDay)
- Blood and Diversity (American Red Cross)
- Blood Type Game (American Red Cross)
Statistics and Research
- Facts and Figures (America's Blood Centers)
- ClinicalTrials.gov: Blood Cells (National Institutes of Health)
Journal ArticlesReferences and abstracts from MEDLINE/PubMed (National Library of Medicine)
- Article: Temperature-Sensitive Indicators for Monitoring RBC Concentrates Out of Controlled Temperature...
- Article: Comparative Analysis Reveals Potential Utility of Digital Microscopy in the...
- Article: Red Blood Cell Distribution Width is Independently Correlated With Diurnal...
- Blood -- see more articles