What is the fine-grained topic of the following text: Thebenzodiazepine (BZD) receptor located on the interface of and subunits modulates GABAA receptor in either direction:agonists like diazepam facilitate where can you buy Keppra while inverse agonists like DMCM hinder GABA mediated Cl? Only return the topic.
Modulation of GABAA receptor by benzodiazepine receptor