YES! Usage of good quality injections assist in producing good quality of eggs which ever lead to better embryo formation. Also, high-end techniques like IMSI are required to set qualitative sperm especially in cases with relation to the male factor. But all of the abc techniques require the doctors and embryology team to have more than 5 years of experience Usually all Day 5 embryos will not lead to 9 months pregnancy. So we need to ensure to the best grade embryo is transferred to increase the chances. Gardener's grading system now a benchmark to find out the most competitive embryo. It is important to limit the San cycle transfer only in those couples who have more than 4 Day 5 embryos as success rate is not more than 20-25%. The remaining embryos can be frozen. But it is of prime important' to note that the concept of vitrification/freezing requires a lot of meticulousness & perfection from the embryology team. Choosing of the normal uterus with 8-9 mm Endonietr