Leukocytes and erythrocytes are structural parts of the blood. In other words, blood cells.
Leukocytes are characterized by:
Unstable cell shape;
Life expectancy from several days to several years;
In the blood – one cubic millimeter of it is concentrated from 6 to 8 thousand.
Erythrocytes are characterized by:
Cells are rounded, red, concave in the center on both sides;
They contain hemoglobin, which contains protein (globin) and iron (hemo). One erythrocyte contains 4 hemoglobin molecules;
the density of red blood cells in one cubic millimeter of blood – up to 5 million;
The lifespan is about 120 days.
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