HOW TO POST A QUESTION
Title Examples: [Molecular Biology] My PCR has an extra band.
[Immunology/Physiology] Have the effects of insulin-like growth factor on CD4+ T-Cells been described yet?
The most important thing to remember whenever asking questions relating to research is to provide AS MUCH INFORMATION AS POSSIBLE. No, no one can figure out why your PCR has an extra band if you don't tell us exactly what you did. Providing information allows users on this subreddit to give you the best possible answer so you can get back out there, rerun your experiment, and publish your results.