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To unlock all the explanations of this course, you need to be enrolled.

To unlock all the explanations of this course, you need to be enrolled.

To unlock all the explanations of this course, you need to be enrolled.

To unlock all the explanations of this course, you need to be enrolled.

To unlock all the explanations of this course, you need to be enrolled.

To unlock all the explanations of this course, you need to be enrolled.

To unlock all the explanations of this course, you need to be enrolled.

To unlock all the explanations of this course, you need to be enrolled.
| 1. | 3' (downstream) end and 5' (upstream) end, respectively of the transcription unit |
| 2. | 5' (upstream) end and 3' (downstream) end, respectively of the transcription unit |
| 3. | the 5' (upstream) end |
| 4. | the 3' (downstream) end |

To unlock all the explanations of this course, you need to be enrolled.

To unlock all the explanations of this course, you need to be enrolled.

To unlock all the explanations of this course, you need to be enrolled.

To unlock all the explanations of this course, you need to be enrolled.

To unlock all the explanations of this course, you need to be enrolled.

To unlock all the explanations of this course, you need to be enrolled.

To unlock all the explanations of this course, you need to be enrolled.

To unlock all the explanations of this course, you need to be enrolled.

To unlock all the explanations of this course, you need to be enrolled.

To unlock all the explanations of this course, you need to be enrolled.