[Device for time lapse studies on living cells in vitro (author's transl)]

Optical components of an inverted microscope have been utilized to set up a device for the observation of living cells under phase contrast conditions. Time lapse recording is performed either by use of a super-8 movie-camera or by a 1/2 inch video device. A special design provides a high focal stability. Standard plastic culture flasks can be used for high optical quality recordings. Both types of recording require low light intensities which results in a minimal light induced cell damaging.