passages.id: split_1_test_2748_passage
passages.type: progene_text
passages.text: Over - expression of Tax in COS cells resulted in fewer cells in G(0) / G(1) consistent with its activity to induce G(1) - to S-phase progression in lymphocytes , while over - expression of pro - IL-16 in COS cells resulted in G(0) / G(1) arrest .