The role of the thymus in our long-term immunity and health is poorly understood. A new study suggests we need to pay attention ...

As a researcher, I still remember the discomfort I felt every time I had to sacrifice laboratory animals for an experiment.

Each year, thousands of people in the U.S. die waiting for donated organs. A new book shares how organs from other species could change that.

Scientists can now do research on live human organs without petri dishes or animal testing.

Every multicellular organism, from tiny worms to humans, elephants, and whales, needs a way for their cells to connect with each other to form tissues, organs, and organize their overall body plan.