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[Remodelling extracellular matrix in pineal gland at aging].

Matrix metalloproteinases (MMP) 2 and 9 has been verified in pineal gland, where MMP take part in remodelling extracellular matrix. Descrease of number MMP2 and 9 has been verified in pineal gland of old age and long liver people in comparison with middle age people. Pinealocytes and/or immune cells of pineal gland can synthesize matrix metalloproteinases.