“ Estradiol inhibited cell proliferation, as measured … 10(-9)-10(-7) M and [3H]thymidine incorporation into DNA at 10(-13)-10(-8) M. Both LH-RH analogs inhibited cell growth … range 10(-8)-10(-5) M, but SB-75 induced a greater growth inhibition than [D-Trp6]LH-RH.”