The growling dog frightened him.

Pain sensation can be effectively controlled by systems of neurotransmitters such as oxidonitrergic, opioid, and cholinergic systems, in addition to others, acting in different ways during the pain transmission process and the interference with one of the components makes them a very interesting and complex phenomenon.

O, my conscience! said I, she had one but I never look'd into it.

Speak with your chest my yute, don't hint me Badman step on the L with a glizzy