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Mice who get less attention from their mothers have more copies of a common retrotransposon in the genomes of their hippocampal neurons.

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image: Hungry Macrophages Keep Tattoos on Mice’s Skin

Hungry Macrophages Keep Tattoos on Mice’s Skin

By Diana Kwon | March 7, 2018

A new study reveals that a constant stream of ink-gobbling immune cells helps hold tattoos in place.

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image: Maternal Response to Zika Damages Mouse Fetuses

Maternal Response to Zika Damages Mouse Fetuses

By Catherine Offord | January 5, 2018

Signaling pathways triggered by the mother’s immune system may cause complications during fetal development.

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image: Alcohol Damages Mouse DNA

Alcohol Damages Mouse DNA

By Jef Akst | January 3, 2018

A byproduct of alcohol consumption causes mutations in the DNA of mouse blood stem cells, and some of the breaks are not repaired.

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Mice receiving the treatment produced their own monoclonal antibodies and survived infection with the life-threatening pathogen Pseudomonas aeruginosa.

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image: How Immune Receptors Got into Mouse Noses

How Immune Receptors Got into Mouse Noses

By Shawna Williams | September 1, 2017

A study traces proteins’ evolution from the immune to the olfactory system.

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image: A Bacterial Messenger Molecule Extends Healthspan

A Bacterial Messenger Molecule Extends Healthspan

By Sandhya Sekar | August 28, 2017

E. coli that make indoles protect older worms, flies, and mice from frailty. 

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image: Virtual Reality for Freely Moving Animals

Virtual Reality for Freely Moving Animals

By Ashley Yeager | August 21, 2017

Experiments that place untethered fish, flies, and mice in simulated environments give clues about the animals’ social behavior.

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image: First In Vivo Function Found for Animal Circular RNA

First In Vivo Function Found for Animal Circular RNA

By Catherine Offord | August 10, 2017

Mice lacking the RNA had deregulated microRNAs in the brain, disrupted synaptic communication, and behavioral abnormalities associated with neuropsychiatric disorders.

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image: Infographic: Plastics’ Effects

Infographic: Plastics’ Effects

By Ee Ling Ng | June 1, 2017

Lab studies suggest that plastic pollutants in the environment could have detrimental effects on animals’ physiology.

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