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image: CRISPR Used in Human Embryos to Probe Gene Function

CRISPR Used in Human Embryos to Probe Gene Function

By | September 20, 2017

OCT4 is necessary for blastocyst formation in the human embryo, researchers report.

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In one winning paper, scientists describe an insect whose females have evolved a penis-like appendage that penetrates males’ “vaginas.”

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A study of a simple marine animal suggests that the common ancestor of cnidarians and bilaterians may have had three germ layers instead of two.

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image: Image of the Day: This Is Not a Penis

Image of the Day: This Is Not a Penis

By | August 29, 2017

Scientists encountered a marine worm strikingly reminiscent of a human phallus, along with other bizarre creatures, while exploring deep seas off of the Australian coast this summer.

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Research shows that human immunity develops much earlier than previously thought, but functions differently in adults.

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The 19th century biologist’s drawings, tainted by scandal, helped bolster, then later dismiss, his biogenetic law.

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Time-lapse imaging shows the immune cells transferring chemical signals during pigment pattern formation in developing zebrafish.

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image: Infographic: How the Zebrafish Got Its Stripes

Infographic: How the Zebrafish Got Its Stripes

By | May 1, 2017

Immune cells called macrophages shuttle cellular messages in the skin.

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The lungs of extremely premature lambs supported in a closed, sterile environment that enables fluid-based gas exchange grow and develop normally, researchers report.

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image: Image of the Day: Stop Signals

Image of the Day: Stop Signals

By | April 17, 2017

Transcytosis, suppression of vesicle traffic across cells, helps reduce permeability in the blood-retinal barrier during development.

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