the frequency of mitoses of adrenaline ( a ) cells and noradrenaline ( n ) cells in the adrenal medulla of nonoperated ( no ) , sham-operated ( spx ) , and pinealectomized ( px ) male , 53-day-old holtzman rats ( n = 133 ) was investigated by means of light microscopy .
C0026255
mitoses
C0007634
cells