From this understanding, scientists then identified the four characteristic phases of the cell cycle: mitosis (M), gap 1 (G1), DNA synthesis (S), and gap 2 (G2). The study of these phases ...

The stain can be applied to live, detergent-permeabilized or fixed cells for quantification of their distribution among the three main phases of the cell cycle (G 0 /G 1, S and G 2 /M).