Embryos can be classified into 4 types: from A to D, from the best to the worst quality. In this image differences can be seen, such as the appearance of the cells and the degree of fragmentation.
Classification of the embryos on the 3rd day of development
By Edurne Martínez Sanz BSc, MSc (senior clinical embryologist), Gorka Barrenetxea Ziarrusta MD, PhD (gynecologist), José Luis de Pablo BSc, MSc, PhD (senior clinical embryologist), José Muñoz Ramírez BSc, MSc, PhD (senior clinical embryologist), Neus Ferrando Gilabert BSc, MSc (embryologist), Zaira Salvador BSc, MSc (embryologist) and Romina Packan (invitra staff).
Last Update: 04/16/2020