91-BV-1 Before vitrification, notable a relatively thick ZP 91-AW-1 No contraction after warming, cells appear clear and viable

90-BV-1 Blastocyst 4bb before vitrification, one necrotic cell at 2 o’clock, granular trophectoderm cells 90-BV-2 Before vitrification blastocyst 2bb with large cells visible in inner cell mass

89-BV-1a Few elypsoid trophectoderm cells 89-BV-1b Large compact inner cell mass 89-AW-1a After warming contraction of the blastocysts whereas the majority of the trophectoderm cells stay attached to the ZP…

88-BV-1 Compact inner cell mass before vitrification 88-AW-1 Half collapsed blastocyst after warming

87-BV-1a Before vitrification well-defined cohesive trophectoderm cells 87-BV-1b Inner cell mass compact but consisting of few cells 87-AW-1a No sign of contraction after warming

85-BV-1a Cohesive trophectoderm of fully expanded blastocyst before re-vitrification 85-BV-1b Inner cell mass with presence of some loose and necrotic cells before re-vitrification

86-BV-1 Blastocyst 4ab before vitrification, clump inner cell mass slightly visible at 6 o’clock, trophectoderm with loose cells which are slightly granular 86-BV-2 Blastocyst 4bb before vitrification with focus on…

83-BV-1 Big inner cell mass with loose trophectoderm before vitrification 83-BV-2 Blastocyst 2bc before vitrification 83-AW-1 Almost full re-expansion directly after warming

84-BV-1a Trophectoderm with granular cells before vitrification 84-BV-1b Large and flat inner cell mass

82-BV-1a Before vitrification expanded blastocyst, trophectoderm in focus 82-BV-1b Nice compact inner cell mass with cytoplasmic string to trophectoderm cells at 3 o’clock 82-AW-1a Half contracted blastocyst after warming, one…