| abstract |
A cell handling apparatus is provided with a devise (17) for moving cells (3, 4) which are held in chambers (5) of the apparatus, at predetermined periods, preferably a divice for generating pulse-like changes in fluid pressure of the chambers (5), so as to prevent the same portions of the cells (3, 4) from remaining in contact with the wall surfaces of the chambers (5) over a predetermined period of time. |