Quality B embryos present localized fragmentation that occupies between 10 and 25% of the size. Their blastomeres are not perfectly symmetrical although they do have a single nucleus. The zona pellucida can be normal or present alterations in some cases.
Read the full article on: Embryo Quality & Grading – Does It Affect IVF Success? ( 33).
By Edurne Martínez Sanz B.Sc., M.Sc. (senior clinical embryologist), José Muñoz Ramírez B.Sc., M.Sc., Ph.D. (senior clinical embryologist), Mark P. Trolice M.D., F.A.C.O.G., F.A.C.S., F.A.C.E. (reproductive endocrinologist), Marta Barranquero Gómez B.Sc., M.Sc. (embryologist), Zaira Salvador B.Sc., M.Sc. (embryologist) and Romina Packan (invitra staff).
Last Update: 10/24/2019
