March 6, 2025 This photo gallery, curated by photo editor Eloy Martin, highlights some of the most compelling images ...

Fluorescent microscope image of a mouse pancreatic islet, the part of the pancreas that makes insulin. Green marks cells that are multiplying. Pancreatic cells don’t generally grow in adulthood, but ...

Microscope image of mouse pancreatic tissue, with insulin-producing tissue marked in brown. Early-life exposure to a specific gut microbe appears to boost growth of insulin-producing tissue, the new ...