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Fertilisation of a human egg2019-04-10T05:37:10ZFertilisation of a human egg. Only one sperm makes it. Once that sperm has penetrated the egg, various changes prevent other sperm from entering. Nuclear material from sperm and egg mingle and the cell divides.PT25Shttps://d3e1m60ptf1oym.cloudfront.net/7046a617-dbcb-44bf-a305-599a92eaf5d5/Fertilization_63_1920_SEPIA_xlarge.jpghttps://d3e1m60ptf1oym.cloudfront.net/7046a617-dbcb-44bf-a305-599a92eaf5d5/Fertilization_63_1920_SEPIA_mp4_hd_video.mp4https://www.scientific.pictures/-/galleries/animations/-/medias/7046a617-dbcb-44bf-a305-599a92eaf5d5/pricehttps://www.scientific.pictures/-/galleries/animations/-/medias/7046a617-dbcb-44bf-a305-599a92eaf5d5/price