Flow cytometric analysis of AnnexinV stained cells (AnnexinV + and PI-) revealed a significantly higher number of cells that had translocated phosphatidyl serine to the outer surface of their plasma membranes in the HF group (human control, 2.03% (1.77-2.48%) vs. HF, 3.13% (2.35-4.18%), p = 0.03; FCS, 2.26% (2.16-2.64%) vs. HF, p = 0.6). The gene discussed is ANXA5; the disease is hydrops fetalis.