the gaba-induced 36cl- flux was inhibited by several cyclodienes and gamma-hexachlorocyclohexane ( gamma-bhc ) with the following order of decreasing potency : endosulfan i greater than endrin greater than endosulfan ii greater than dieldrin greater than heptachlor epoxide greater than gamma-bhc greater than heptachlor .
C0019220
heptachlor epoxide
C0019219
heptachlor