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Double labeling with (/sup 3/H)thymidine and (/sup 125/I)iododeoxyuridine as a method for determining the fate of injected DNA and cells in vivo. [Mice]

Journal Article · · J. Cell Biol.; (United States)
DOI:https://doi.org/10.1083/jcb.67.2.484· OSTI ID:7279297
Mice were injected intravenously and intraperitoneally with preparations of intestinal nucleoprotein, spleen nuclei, mouse thymus cells, or human kidney T cells whose DNA had been labeled with both (/sup 3/H)thymidine (TdR) and (/sup 125/I)iododeoxyuridine (IUdR). Since free TdR is reutilized more efficiently than free IUdR produced by enzymic hydrolysis of the exogenous DNA, the ratio of (/sup 3/H)TdR/(/sup 125/I)IUdR in the DNA fraction of the tissues of the recipient mice provides a measure of the amount of intact exogenous DNA in the tissue. In most instances, the doubly labeled exogenous DNA was almost completely hydrolyzed within 1 day after injection, but survival of the DNA from whole cells could be demonstrated in some cases.
Research Organization:
Kernforschungsanlage, Juelich, Ger.
OSTI ID:
7279297
Journal Information:
J. Cell Biol.; (United States), Journal Name: J. Cell Biol.; (United States) Vol. 67; ISSN JCLBA
Country of Publication:
United States
Language:
English

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