Changes

===Lymphoid tissue===

===Lymphoid tissue===

[[Image:LH Bone Marrow Granulocyte Histology.jpg|thumb|75px|'''Developing granulocytes''' ©RVC 2008]]

[[Image:LH Bone Marrow Granulocyte Histology.jpg|thumb|125px|'''Developing granulocytes''' ©RVC 2008]]

*In some primates it acts as a [[:Category:Primary Lymphoid Tissue|primary lymphoid organ]]

*In some primates it acts as a [[:Category:Primary Lymphoid Tissue|primary lymphoid organ]]

*Bone marrow is also a [[:Category:Secondary Lymphoid Tissue|secondary lympoid tissue]]

*Bone marrow is also a [[:Category:Secondary Lymphoid Tissue|secondary lympoid tissue]]