+Marrow is the soft, vital tissue nested within bones. It serves as the primary factory for [Blood Cells](/wiki/blood-cells), crucial for oxygen transport and fighting disease. This essential substance underpins [Life](/wiki/life) itself.
+## See also
+- [Bone](/wiki/bone)
+- [Stem Cells](/wiki/stem-cells)
+- [Immune System](/wiki/immune-system)
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