T cell activation—the process by which these key immune defenders recognize threats and mobilize against them—depends on exquisitely timed molecular signals. Now researchers have captured one of the ...

New stem cell-based embryo model reveals previously unknown communication between early tissues that become the spine and muscles in the central part of the body. From the moment an embryo starts to ...

After an illness like the flu, symptoms may go away while a person still feels lousy. Researchers wanted to learn more about this state, and how people who are recovering from illnesses can be ...