Sperm, Eggs, & Reproduction73/78
Fertilisation #3

Fertilisation #3

Fertilisation of a human egg (oocyte) by sperm.
Oocyte membrane becomes resistant to further sperm.

Illustration ID: Fertilization_3
copyright Russell Kightley
Illustration size: 37.7 Mpixels (108 MB uncompressed) - 8192x4608 pixels (27.3x15.3 in / 69.4x39.0 cm at 300 ppi)
Illustration keywords: cell cleavage, cell division, cumulus cells, egg, embryo, fertilisation, gametes, oocyte, polar body, pronuclei, reproduction, sperm, zona pellucida, zygote
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