epsilon toxin: a bacterial toxin produced by clostridium perfringens; causes intense abdominal cramps and diarrhea that begins 8-22 hours after consumption of foods containing large numbers of these bacteria
bacterial toxin: any endotoxin or exotoxin formed in or elaborated by bacterial cells
pyramidal tract: any of the important motor nerves on each side of the central nervous system that run from the sensorimotor areas of the cortex through the brainstem to motor neurons of the cranial nerve nuclei and the ventral root of the spinal cord