LeechesHirudo medicinalisLeechingAeromonasPlants, MedicinalInvertebrate HormonesGanglia, InvertebrateGangliaFMRFamideSwimmingBlotting, SouthwesternOctopamineInterneuronsMotor NeuronsGastrointestinal TractSerotoninCentral Nervous SystemSymbiosisEthnobotanyMedicine, TraditionalNervous SystemBufoteninLocomotionPhytotherapyNeuronsSalivary Proteins and PeptidesMolecular Sequence DataHirudinsPlant ExtractsAction PotentialsBehavior, Animal