Bone marrow contains tissue that produces lymphocytes. B-lymphocytes (B-cells) mature in the bone marrow. T-lymphocytes (T-cells) mature in the thymus gland. Other blood cells such as monocytes and leukocytes are produced in the bone marrow.one marrow contains tissue that produces lymphocytes. B-lymphocytes (B-cells) mature in the bone marrow. T-lymphocytes (T-cells) mature in the thymus gland. Other blood cells such as monocytes and leukocytes are produced in the bone marrow.
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Phone Number of Allstate Claims is 1-800-255-7828 . The Allstate Corporation is one of the leading insurance companies in United States. Founded in 1931, the company has also operations in Canada. It was started as a division of Sears, Roebuck and Company. It was a part of Sears, Roebuck and Company till 1993.