Fig. 6

FACS analysis with the Annxin V-Test of HLaC78 and FADU, treated with EC50 of Osmunda regalis ethanolic extract. Q1: PI positive, Annexin V negative cells; necrotic or undefined cell death; Q2: Annexin V positive, PI positive cells, cells in late apoptosis; Q3: Annexin V negative, PI negative cells; vital cells Q4: Annexin V positive, PI negative; pre-apoptotic cells.

Ko= untreated control cells.