The previous page is sending you to https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-fibers-of-fertilized-sea-urchin-eggs-485-figure-2-photomicrograph-of-perivitelline-fibers-arrow-observed-under-differential-interference-optics-bar-=-10-effect-ofca-free-sea-water-fertilized-eggs-were-transferred-into-ca-free-artificial-sea-water-one-min-after-fertilization-and-washed-with-ca-free-sea-water-three-times-after-this-treatment-no-fibers-formed-in-the-perivitelline-space-fig-3a-correspondingly-the-egg-rested-on-the-bottom-of-the-perivitelline-space-in-horizontal-view-figure-3-a-a-fertilized-egg-tra-image234635707.html.

 If you do not want to visit that page, you can return to the previous page.