In my gel electrophoresis I see some weird DNA zigzags. I ran the gel with PCR products and ladder. This problem is only visible at around 10-13 well no in the middle. The rest is fine. The tray and comb appears to be fine. The ladder is fine when run in different well. I haven't seen anything like this before. I have attached a photo of my gel. Any idea why that is happening? I have used fresh TAE buffer both for making the gel and as the running buffer.
Edited by Bioscientist, 18 August 2014 - 02:22 PM.