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A soft [[tissue]] inside the [[bone]] that produces [[blood cells]], including the ones that fight infection.<ref>Wile, Dr. Jay L. ''Exploring Creation With Biology''. Apologia Educational Ministries, Inc. 1998</ref>
A soft [[tissue]] inside the [[bone]] that produces [[blood cells]], including the ones that fight infection.<ref>Wile, Dr. Jay L. ''Exploring Creation With Biology''. Apologia Educational Ministries, Inc. 1998</ref> The bone marrow is brown substances that can be viewed after the bone is broken on a dead animal or human.
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==References==
==References==
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[[Category:Biology]]
[[Category:Biology]]