“In myometrial slices preincubated with nialamide to inhibit MAO and incubated with cocaine to inhibit neuronal uptake, 3H-normetanephrine (3H-NMN) formation was inhibited in the order of potency 2-hydroxy oestrone ≥ 2-hydroxy oestradiol = 2-methoxy oestradiol ≥ 2-methoxy oestrone.”