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foam cells (lipid-laden macrophages) drive atherosclerotic plaque formation

For a physicist

Different pain signals need different speeds

and acid-base homeostasis

Almost every named structure on the inside of the skull has a vessel running near it

red blood cells necklace L | gold vermeil pp_DNA foam cells (lipid-laden macrophages) drivered blood cells necklace L 18k gold vermeil Red blood cells shed their nucleus to make room for 270 million hemoglobin molecules. A biconcave disc 7 8 micrometers across, made to flow through capillaries thinner than itself. Life depends on a shape that optimizes oxygen delivery with nowhere left to spare. The Science of the Red Blood Cell Erythrocytes are among the most specialized cells in the body, lacking a nucleus and all organelles except