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Regulatory T Cells Found To Safeguard Brain Health, Memory Formation

Research identifies guardian cells dwelling in the protective layers of the brain

4 min read
microscope image shows blue swirls with clusters of yellow dots against a black background
Harvard Medicine magazineResearch

Decoding the Chemistry of the Microbiome

Scientists zoom in on microbial messages at the molecular level to understand how the microbiome shapes health

9 min read
An illustration of a detective shining a flashlight on what looks like footprints but is actually the outline of little microbes

Drawing a Line From the Gut Microbiome to Inflammation and Depression

Study provides explanation for one bacterium’s link to mental health

3 min read
A gloved hand holds a Petri dish with bacteria growing in it

Scientists Uncover Structure of Critical Component in Deadly Nipah Virus

Findings could inform the design of treatments to combat infection

4 min read
A purple circular Nipah virus particle floats in a field of pink surrounded by brown VERO cells.

New Understanding of How Genetic Mutation Causes Huntington’s Disease

Brain cell study shows mutation expands over decades, becomes rapidly toxic later in life

5 min read
Brain tissue in Huntington’s disease

How Good Are AI ‘Clinicians’ at Medical Conversations?

Researchers design a more realistic test to evaluate AI’s clinical communication skills

4 min read
Close-up of a laptop, stethoscope, and physician’s forearm in white coat

The Year in Harvard Medical School Science

Reflecting on research discoveries reported in 2024

A grid of 9 images represents top HMS science articles from 2024. They show two surgeons at work; a spot circled on a lung X-ray; health care providers seen from above; a target with pills scattered across it; cells colored purple and aqua under a microscope; illustration of lungs; a mouse brain with a cluster of green cells; mosquitoes; and a vial of blood labeled “BRCA Genetic Test.”

How Sound and Vibration Converge in the Brain to Enhance Sensory Experience

Research may help explain why sense of touch gets stronger, more precise after hearing loss

5 min read
a woman with eyes closed leans her head and her outstretched hand on a wall

Personalizing the Complete Blood Count Test Could Improve Patient Care

Study suggests using patients’ own reference points for standard blood test

2 min read
A person wearing protective gloves, glasses, and mask holds a small vial containing a blood sample.

Why Do Gliomas Tend To Recur in the Brain?

First look at neuron-tumor connections illuminates formation, spread

4 min read
Cross-section of a mouse brain under a microscope shows a cluster of glioma cells tagged in green and connected neurons shown in red, concentrated around the glioma but also stretching from other areas of the brain.

How HIV Research Has Reshaped Modern Medicine

Decades of scientific work turned the tide on a fatal disease.

10 min read
A bright circular virus particle shines in the center of an image against a dark background, with the edge of an infected cell seen in one corner.

A Universal Gene Therapy for Diamond-Blackfan Anemia Is Poised for Clinical Trials

Treatment designed to work across different genetic mutations

3 min read
Red blood cells appear as dozens of spheres under a microscope