the localization of the absorption peaks of toluidine blue-stained heterochromatin ( ho and hs ) and euchromatin ( eo and es ) of the malpighian tubules of the blood-sucking hemipteran , triatoma infestans klug was studied cytophotometrically ( ho and eo : hetero- and euchromatin of nuclei with one single chromocenter ;
C0059882
euchromatin
C0007610
nuclei