Patent ID: 7935523

Claim:
An apparatus for culturing cells comprising: A. A first container for holding culture media; B. A second container for holding the culturing cells; C. At least, one tube that connects a port in the first container to a port in the second container; and, D. A mechanism to move the first container vertically and cyclically from a position higher than the second container to a position lower than the second container, and viceversa; E. A device to rock-tilt at least one of the two containers along the horizontal axis while said container that is rocked-tilted moves vertically and cyclically; wherein the culture media on the first container migrates by gravity to the second container when the first container is in a position higher than the second container, and wherein the culture media migrates back by gravity from the second container to the first container when the first container is in a position lower than the second container; and wherein the first container moves independently from the second container.