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2. Age-related changes in hematopoietic stem cell population of a long-lived hybrid mouse;Chen;J. Cell Physiol.,1971
3. Impaired Elkind recovery in hematopoietic colony forming cells of aged mice;Chen,1974
4. Effect of age of recipient mice on growth and differentiation of transplanted bone marrow cells;Davis,1968
5. Regulation of stem cell renewal and differentiation: Possible significance in aging;Lajtha;Adv. Gerontol. Res.,1971