Watery fluid between cells plays a major role, offering new insights into how organs and tissues adapt to aging, diabetes, cancer, and more.

The ingestible capsule forms a drug depot in the stomach, gradually releasing its payload and eliminating the need for patients to take medicine every day.

MIT engineers designed polymer microparticles that can deliver vaccines at predetermined times after injection.

Scaling up nanoparticle production could help scientists test new cancer treatments.

With tinier needles and fewer injections, the approach may enable new options for long-term delivery of contraceptives or treatments for diseases such as HIV.

Graduate student and MathWorks fellow Louis DeRidder is developing a device to make chemotherapy dosing more accurate for individual patients.

The needle-free device could be used to deliver insulin, antibodies, RNA, or other large molecules.

The combination of phototherapy and chemotherapy could offer a more effective way to fight aggressive tumors.

These zinc-air batteries, smaller than a grain of sand, could help miniscule robots sense and respond to their environment.

A microneedle patch that delivers immune-regulating molecules can teach T cells not to attack hair follicles, helping hair to regrow.