Sakura film does the same thing at certain times.  I was told by Sakura the
lines will disappear within 48-72 hours.  One way to 'ease' this is to open the
rolls 2-3 days before you will be placing them on the coverslipper so the film
can acclaimate to the weather conditions of humidity, dryness, etc.  Sometimes
this will help the problem..sharon osborn

TWARE4U@aol.com wrote:

> We have noticed with the Mercedes Medical coverfilm numerous lines at times
> on the film when we checked our sections under the microscope.
> Lisa Wierzbicki HT/MLT (ASCP)
> Center for Dermatopathology
> Thomas Jefferson University