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Woman smiling at the camera, working out on a blue yoga mat.
Keeping Older Muscles Strong
From stem cell-recruiting gels to hormone cycle restoration, Tracy Criswell has big ideas about how to combat age-related decline in muscle regeneration.
Keeping Older Muscles Strong
Keeping Older Muscles Strong

From stem cell-recruiting gels to hormone cycle restoration, Tracy Criswell has big ideas about how to combat age-related decline in muscle regeneration.

From stem cell-recruiting gels to hormone cycle restoration, Tracy Criswell has big ideas about how to combat age-related decline in muscle regeneration.

Muscle regeneration

T regulatory cell in red sandwiching an antigen presenting cell in blue
Gut Bacteria Help T Cells Heal Muscle: Study
Natalia Mesa, PhD | Mar 14, 2023 | 4 min read
Regulatory T cells in the colon travel to muscles to promote wound healing in mice, raising questions about how antibiotics may impact injury recovery.
Thomas Lozito poses with Donald, one of his mourning geckos.
Thomas Lozito Is Figuring Out How Lizards Rebuild
Connor Lynch | Feb 14, 2022 | 4 min read
The University of Southern California bioengineer studies how lizards regrow their tails, with the goal of one day inducing regeneration in humans.
Light-Activated Nanodevices Control Cells
Ruth Williams | Sep 1, 2019 | 3 min read
DNA-coated gold nanorods enable cells to be activated by light without genetic manipulation.
Infographic: Optogenetics Without Genetic Engineering
Ruth Williams | Sep 1, 2019 | 1 min read
DNA-loaded nanoparticles that respond to infrared light provide an alternative way to control cell behavior.
Putting Exosomes to Work
Ruth Williams | Sep 1, 2018 | 3 min read
Researchers identify a handy tool for tinkering with the versatile vesicles.
Image of the Day: Muscle Bouquet 
The Scientist Staff and The Scientist Staff | Jan 16, 2018 | 1 min read
Lab-grown muscle stem cells from mice mimic the formation of muscle fibers in vivo. 
Immune Cells' Roles in Tissue Maintenance and Repair
Jeff Biernaskie, Sarthak Sinha, and Waleed Rahmani | Jun 30, 2016 | 1 min read
The cells of the mammalian immune system do more than just fight off pathogens; they are also important players in stem cell function and are thus crucial for maintaining homeostasis and recovering from injury.
“Ghost Fibers” Help Heal Muscle Injury
Karen Zusi | Dec 15, 2015 | 1 min read
Injured muscle cells leave behind organized collagen fibers that act as scaffolding for new tissue growth.
Studies Conflict on Regenerative Molecule
Kerry Grens | May 19, 2015 | 3 min read
Previously shown to boost muscle growth in aged mice, a protein’s role in regeneration just got more complicated.
Rebuilding Missing Muscle
Rina Shaikh-Lesko | Apr 30, 2014 | 3 min read
An acellular matrix can help guide stem cells to injury sites and regrow muscles in both mice and humans, a study finds.
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