I thawed these adherent cells 3 weeks ago, I don't remember when I found this contamination,
Contaminants and cells do not grow in the same layer and contaminants appear to be irregular or filamentous,
the cells are growing well, and the medium is always clear,
the blurred dots and lines are because the microscope is not clean, that is not contamination.
but I wish to fix this problem before it becomes worse,
If anyone has any suggestions, that would be a great help to me, thanks a lot.