Tumor volume in the morphometric assay (Figure 7(f)) tended to correlate with the late expression of Twist (R = 0.74, p = 0.05) and strongly correlated with the increase in expression of Twist between days 3 and 14 of an in vitro culture of the respective tumor-inducing cells (R = 0.96, p = 0.0001; Figure 8(c)). The gene discussed is TWIST1; the disease is neoplasm.