In the Meselson-Stahl DNA replication experiment, if the cells were first grown for many generations in 15N containing media, and then switched to 14N containing media, what percent of the DNA had 1 light strand and 1 heavy strand after 2 generations of growth in 15N growth media?

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#Question id: 1918

#Unit 4. Cell Communication and Cell Signaling

In pancreatic carcinoma the ras gene:

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#Question id: 1919

#Unit 4. Cell Communication and Cell Signaling

Strongly immunogenic tumors appear:

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#Question id: 1920

#Unit 4. Cell Communication and Cell Signaling

Which of the following is most commonly seen in African children with Burkitt's lymphoma?

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#Question id: 1921

#Unit 4. Cell Communication and Cell Signaling

In Burkitt's lymphoma, a vaccine against which of the following might prove useful?

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#Question id: 1922

#Unit 4. Cell Communication and Cell Signaling

A B-cell lymphoma will express a unique tumor antigen called:

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#Question id: 1923

#Unit 4. Cell Communication and Cell Signaling

Which of the following is a diagnostic marker for tumors of the colon?