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. 1976 Jul 1;54(13):637-41.
doi: 10.1007/BF01469030.

Cytoplasmic DNA synthesis by cord blood cells of premature and full-term infants: an autoradiographic study

G Prindull, A Ron, J M Yoffey

Cytoplasmic DNA synthesis by cord blood cells of premature and full-term infants: an autoradiographic study

G Prindull et al. Klin Wochenschr. .

Abstract

Cord blood cells from 8 full-term and 12 premature infants as well as blood leukocytes from 10 adults were incubated with 3H-thymidine and were subsequently exposed to autoradiographic emulsion for prolonged periods of 45 and 90 days. Cytoplasmic label -- which were interpreted as evidence of mitochondrial DNA synthesis -- was found in 1.7 per cent of lymphoid cells from adult blood, in 2.9 per cent and 4.5 per cent of lymphoid cells from full-term and premature infants, respectively. Statistical analysis of the data shows that the number of labelled cells is significantly larger in the blood of premature infants than in adults (p less than 0.01).

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