Van Neste D, Tobin DJ (2004). "Hair cycle and hair pigmentation: dynamic interactions and changes associated with aging". Micron. Quyển 35 số 3. tr. 193–200. doi:10.1016/j.micron.2003.11.006. PMID15036274.
Miller RA (tháng 4 năm 2001). "Biomarkers of aging: prediction of longevity by using age-sensitive T-cell subset determinations in a middle-aged, genetically heterogeneous mouse population". The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences. Quyển 56 số 4. tr. B180-6. doi:10.1093/gerona/56.4.b180. PMID11283189.
Van Neste D, Tobin DJ (2004). "Hair cycle and hair pigmentation: dynamic interactions and changes associated with aging". Micron. Quyển 35 số 3. tr. 193–200. doi:10.1016/j.micron.2003.11.006. PMID15036274.
Miller RA (tháng 4 năm 2001). "Biomarkers of aging: prediction of longevity by using age-sensitive T-cell subset determinations in a middle-aged, genetically heterogeneous mouse population". The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences. Quyển 56 số 4. tr. B180-6. doi:10.1093/gerona/56.4.b180. PMID11283189.