+**C3e** is a small protein fragment cleaved from [Complement C3](/wiki/complement-c3), a central component of the [Immune System](/wiki/immune-system). It plays a regulatory role in the mobilization of hematopoietic stem cells, influencing the body's recovery from stress and injury.
+## See also
+- [Complement System](/wiki/complement-system)
+- [Stem Cell](/wiki/stem-cell)
+- [Inflammation](/wiki/inflammation)
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