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DePauw University

DePauw University in Greencastle, Indiana, USA, is a private, national liberal arts college with an enrollment of approximately 2,400 students. The school has a Methodist heritage and was originally known as Indiana Asbury University. DePauw is a member of both the Great Lakes Colleges Association and the Southern Collegiate Athletic Conference.

More information: http://en.wikipedia.org/wiki/DePauw_University

Jean Fouquet (French, 1420-1480)

Jean Fouquet (French, 1420-1480)
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FIGURE 25-2 The Meselson-Stahl experiment. (a) Cells were grown for many generations in a medium containing only heavy nitrogen, 15N, so that all the nitrogen in their DNA was 15N, as shown by a single band (blue) when centrifuged in a CsCl density gradient. (b) Once the cells had been transferred to a medium containing only light nitrogen, 14N, cellular DNA isolated after one generation equilibrated at a higher position in the density gradient (purple band). (c) A second cycle of replication yielded a hybrid DNA band (purple) and another band (red), containing only [14N]DNA, confirming semiconservative replication.
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