Male sterility sperm factor refers to alterations that directly affect sperm. For example, the low concentration of sperm in semen, its poor motility or alterations in its morphology. All of these reasons, in addition to others, prevent sperm from fertilizing the woman's egg to result in pregnancy.
By Ana María Segura Paños MD, MSc (andrologist), Emilio Gómez Sánchez BSc, PhD (senior embryologist), Zaira Salvador BSc, MSc (embryologist) and Marie Tusseau (invitra staff).
Last Update: 02/12/2019