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image: Ancient Protein Helps <em>E. coli</em> Thwart Viral Attack

Ancient Protein Helps E. coli Thwart Viral Attack

By | May 9, 2017

When engineered to use a four-billion-year-old version of the protein thioredoxin, the bacteria can stall bacteriophage replication, a new study shows.

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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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Scientists are criticizing the claim that hominins were in North America more than 100,000 years earlier than the currently accepted estimation.

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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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image: Image of the Day: Tubular Origins

Image of the Day: Tubular Origins

By | March 23, 2017

Murine neural tubes, with each image highlighting a different embryonic tissue type (blue). The neural tube itself (left) grows into the brain, spine, and nerves, while the mesoderm (middle) develops into other organs, and the ectoderm (right) forms skin, teeth, and hair.

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image: Secrets from Neanderthal Tooth Plaque

Secrets from Neanderthal Tooth Plaque

By | March 10, 2017

Ancient hominins in northern Spain ate mushrooms, pine nuts, and moss, and may have used Penicillium mold and other natural products to sooth toothache pain.

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Researchers report growing a mouse embryo using two types of early stem cells.

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