The present invention claims and discloses a novel apparatus and method for efficiently cultivating cells with minimal mortality in order to harvest a maximum amount of cellular products generated by the cultivated cells. More particularly, the present invention teaches a method and a device for plating cells and causing maximum adherence of cells of interest. Furthermore, the present invention also teaches a growth substrate means that is capable of providing the largest surface area for cell adhesion and functions as an oxygenator, a depth filter and a static mixer to maximize the production of cellular products by intermittently and periodically provide sufficient oxygen and nutrients to the cells without causing cell death. The device of the present invention is economical and can be disposable thus eliminating complications caused by sterlization and is capable of periodically and intermittently provide oxygen and nutrients to cells, through controlling the amount of culture medium that comes into contact with the growth substrate means.