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Clostridium botulinum produces a transcription factor that can aggregate and self-propagate a prion-like form, leading to genome-wide changes in gene expression in E. coli, according to a study.

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A team of scientists was unable to replicate controversial, high-profile findings published in 2011.

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image: How Hummingbirds Sense Movement While Hovering

How Hummingbirds Sense Movement While Hovering

By | January 5, 2017

A visual motion-sensing brain region found in all four-limbed vertebrates displays unique properties in Anna’s hummingbirds.

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image: Behavior Brief

Behavior Brief

By | December 23, 2016

A round-up of recent discoveries in behavior research

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Standard taxonomy lumps together bird species that should be separate, a new study suggests, raising the total number of estimated species from 9,000 to 18,000.

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image: Video: Watch Cells Crawl To Firmer Ground

Video: Watch Cells Crawl To Firmer Ground

By | December 11, 2016

This collective migration, called durotaxis, depends on which cells get the best grip on a surface.

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Scientists present evidence of bacteria-driven mating in flagellate eukaryotes at the American Society for Cell Biology annual meeting.

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image: Controlled Splicing Extends Life Span in Roundworms

Controlled Splicing Extends Life Span in Roundworms

By | December 7, 2016

Increasing the expression of an RNA splicing factor mimics dietary restriction, prolonging life in nematodes. 

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image: “Celldance” Selections

“Celldance” Selections

By | December 5, 2016

Highlights from the American Society for Cell Biology’s 2016 video grant competition

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image: Famed Mammalian Embryologist Dies

Famed Mammalian Embryologist Dies

By | December 2, 2016

Andrzej Tarkowski’s research laid the groundwork for future advances in cloning, stem cell research, and in vitro fertilization.

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