Cell cycle alterations induced by treatment of NCI-H526 cells with either cisplatin or Titanocene Y at the indicated concentrations. Values are presented as mean ± SD (n = 2). Differences to control cells were statistically significant for cisplatin for G1/0 phase for dilutions of 0. 52 to 2.75 εM versus control and for the S and G2M phases over the whole concentration range, except at 8.3 εM, versus control. Differences to control cells were statistically significant for Titanocene Y for G1/0 phase at 51.2 εM, for S phase over the whole concentration range, and for G2M phase for all concentrations, except 51.2 εM Titanocene Y.