Minor fragmentation only (less than 15% of the embryo) and/or cells are mostly of equal size.
The arrows indicate the fragmentation of the zygote, obtained from cell fragments. These fragments appear out of focus.
By Edurne Martínez Sanz BSc, MSc (senior clinical embryologist), José Muñoz Ramírez BSc, MSc, PhD (senior clinical embryologist), Mark P. Trolice MD, FACOG, FACS, FACE (reproductive endocrinologist), Neus Ferrando Gilabert BSc, MSc (embryologist) and Sandra Fernández BA, MA (fertility counselor).
Last Update: 04/01/2014