___ drugs focus on efforts to change the concentration of neurotransmitters in the brain. For example, selective serotonin reuptake inhibitors concentrate serotonin in synapses between neurons.

when comparing the cases, what similarities are there in the cases that suggest one person committed these murders?

if you think your dog may have been exposed to a toxin, the best thing to do is to check the label of the item you think your pet ingested. read the information about toxicity. often, but not always, the information on packaging regarding children is relevant to dogs and some manufacturers even discuss dog toxicity. if there is an 800 number on the package – call them! it’s also recommended that you call your veterinarian to confirm the recommendations. if you go to your veterinarian, take all packaging and any information you have on the product.