![](http://www.alamy.com/thumbs/6/6AB4EEE5-5905-43F4-86F0-6D97A211277E/D9NWCX.jpg)
Male reproductive sperm entering the egg.
Size: 4920px × 3690px
Photo credit: © Stocktrek Images / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: artwork, beginnings, biology, biomedical, cell, circular, close-, corona, detail, dimensional, egg, eggs, embryo, embryogenesis, female, fertility, fertilization, glycoprotein, healthcare, horizontal, human, illustration, illustrations, life, magnification, medical, medicine, membrane, microbiology, microscopic, neuroanatomy, nucleus, oocyte, ovum, pellucid, pellucida, pink, pregnancy, radiata, red, reproduction, science, sexual, side, sperm, spermatozoon, sphere, swimming, view, zona, zone