Medical research

Scientists eavesdrop on communication between fat and brain

What did the fat say to the brain? For years, it was assumed that hormones passively floating through the blood were the way that a person's fat—called adipose tissue—could send information related to stress and metabolism ...

Immunology

New players in the immune response identified

The human body contains 600 to 800 lymph nodes, which are specialized organs that trigger immune responses. To be informed about infections in the body, lymph nodes are connected to the individual organs via lymph vessels. ...

Immunology

How the thymus trains T cells to fight infections

T cells are a special class of white blood cells that patrol the body and attack infected or foreign tissue. They learn to distinguish friendly proteins from dangerous ones in an organ called the thymus. However, when T cells ...

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