Spin-off "Cells at Work" (Hataraku Saibou) on the activity of leukocytes.

A spin-off of Hataraku Saibou that focuses on the idle daily lives of erythroblasts (immature red blood cells) who don't want to work.

A spin-off series showing the daily lives and work of the platelets.

The average human body contains approximately 60 trillion cells, and each of them has its own job to do. But when you get injured, viruses and bacteria invade, or an allergic reaction flares up, everyone - from the silent but deadly white blood cells to the brainy neurons - has to work together to get their host through the crisis!