Fig. 2From: Longitudinal surface measurements of human blastocysts show that the dynamics of blastocoel expansion are associated with fertilization method and ongoing pregnancya Surface measurements were performed every hour by using the ellipse tool of the EmbryoViewer software, starting at tB. b Example of a blastocyst expansion curve. c Example of the calculated expansion rate (µm2/hour): maximum measured surface subtracted by the surface at tB, divided by the number of measurements in between. Abbreviations: tB, full blastocyst formationBack to article page