rather , the greater number of fluorescent a-12 perikarya in 30-month-old f344 rats indicates that some a-12 neurons in 3-month-old f344 rats contain levels of dopamine that are subthreshold for detection with the falck-hillarp fluorescence technique , whereas virtually all a-12 perikarya in 30-month-old f344 rats contain detectable quantities of dopamine .
C0027882
neurons
C0599444
perikarya