Doubling Time (h)
Control
E2
E2 + Fulvestrant
MCF-7EV
61.8 ± 1.0
37.9 ± 1.0*
64.6 ± 0.9*
O4
42.1 ± 0.7
37.3 ± 1.6*
39.7 ± 1.1
O7
47.4 ± 1.3
42.6 ± 2.2*