C-grade embryos may or may not have a correct number of blastomeres, usually with asymmetry and some multinucleated blastomeres. The percentage of fragmentation is between 25 and 35% and can be located or distributed throughout the embryo. 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
