The organ that is bean-shaped and responsible for red blood cell storage is the spleen.

While the spleen does store red blood cells, it's important to note that its primary function is not just storage. The spleen is also involved in:

* Filtering blood: Removing old or damaged red blood cells, white blood cells, and platelets.

* Immune response: Producing white blood cells and antibodies.

* Recycling iron: From broken-down red blood cells.

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