EasyProbes? Hoechst 33342 is a popular cell-permeant nuclear counterstain that emits blue fluorescence upon binding to the minor groove of dsDNA. Our EasyProbes? Hoechst 33342 Live Cell Stain is formulated?in a?ready-to-use solution that is provided in a convenient-to-use dropper bottle. Just tip and drip two drops per ml to stain your cells. Hoechst 33342?is widely used for nuclear counterstaining,?cell counting, apoptosis and cell cycle studies.