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CCL2, CCL7 and CXCL8 expression correlates with degenerative tissue changes. Immunohistochemical quantification of CCL2, CCL7 and CXCL8 expression by nucleus pulposus cells. Data shown as are immunopositivity values against histologically determined grade of degeneration. Linear regression analysis was performed to assess correlation between histologically determined grade of degeneration and immunopositivity.
