Some tumors have a special 'door' called GLP-1 receptors that other cancers don’t have — this might let doctors target just those tumors without affecting healthy cells.

Some tumors have a special marker that might let doctors see them better on scans or treat them with targeted radiation, because the marker shows up strongly on the tumor but not in healthy tissue around it.

GLP-1 receptors are found in small amounts in certain parts of healthy human organs like the pancreas, gut, lungs, and brain, but they’re not found at all in the liver, spleen, lymph nodes, or adrenal glands.

Your body has special switches called GLP-1 receptors not just in your gut and pancreas, but also in your heart, brain, kidneys, and even cartilage — and they help control different body functions in all those places.

There's a protein in people's and mice's joint tissues that might be a good target for treating arthritis.