The not-so-dispensable spleen

Overlooked organ harbors immune cells, serving a greater purpose than thought, new study finds

It’s high time somebody said something nice about the lowly spleen. The much-maligned organ serves as a holding tank for ready-to-go immune agents called monocytes, a new study finds. These simple cells are first responders to trouble sites in the body, and the spleen is their main dispatcher, researchers report in the July 31 Science.