TY - RPRT TI - Evidence for long-lived components in developing mouse tissues labeled with leucine. AU - R A Nordgren AU - G P Hirsch AU - R A Menzies AU - D D Hendley AU - R Kutsky AU - B L Strehler PY - 1969 DO - 10.1016/0531-5565(69)90021-7 UR - https://pubmed.ncbi.nlm.nih.gov/5772454/ ID - 5772454 ER -