The document repeatedly mentions SDS-PAGE, a laboratory technique used to separate proteins based on their molecular weight. It appears to emphasize the importance or frequency of this technique in the context provided. However, no specific details or additional information are presented beyond the mention of SDS-PAGE.

1. SDS-PAGE
SDS-PAGE
SDS-PAGE

2. SDS-PAGE

3. SDS-PAGE

4. SDS-PAGE
SDS-PAGE

5. SDS-PAGE

6. SDS-PAGE
SDS-PAGE

7. SDS-PAGE

8. SDS-PAGE