Abstract
Poly(ADP-ribose) synthetase activity in human cervical cancer cell nuclei was found to be approximately twice that of normal cervical cell nuclei. Using antipoly(ADP-ribose) antibody, frozen sections of normal tissue were stained by indirect-immunofluorescence and it was demonstrated that the fluorescence of nuclei in squamous cells decreased during maturation. Correspondingly, superficial cells appearing in smear specimens had less nuclear fluorescence compared with parabasal cells in the same smear. However, cancer cells in cervical smears had marked nuclear fluorescence using immunostaining and were easily distinguished from normal cells.
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