A culture vessel and a method of growing cells in a culture vessel. The culture vessel includes a container and a plurality of agitators. The container receives a medium and cells. The plurality of agitators is positioned to contact the medium when received in the container and configured to promote suspension of the cells in the medium upon oscillation of the agitators. The agitators are at least one of coupled to and formed integrally with the container such that there is no relative movement therebetween. The method includes receiving a medium and cells in a container and oscillating the medium such that the cells traverse along a longitudinal direction of the container.