Cells at Work! - Season 1 - Eps 9: Thymocytes
In the middle of a drill, Killer T Cell tosses a subordinate right into Helper T Cell’s office. The two polar opposites start arguing. According to Dendritic Cell, although they play very different roles today, they were actually classmates at Thymus School. Not only that, but they were totally different back then! What was it that developed between these two during their days of enduring hellish training sessions at Thymus School where only two to three percent of cells manage to survive?
About Cells at Work!

Title: Cells at Work!
First Air Date: 2018-07-08
Last Air Date: 2021-02-27
Status: Ended
Rating: 8.1/10 (from 273 votes)
Language: JA
Seasons: 3
Total Episodes: 21
Network: Tokyo MX BS11 Tochigi TV MBS TV Aichi NET.
Genres: Animation, Action & Adventure, Comedy
Production Companies: David Production, Aniplex, Kodansha, Magic Capsule
Synopsis
This is a story about you. A tale about the inside of your body... According to a new study, the human body consists of approximately 37 trillion cells. These cells are hard at work every day within a world that is your body. From the oxygen-carrying red blood cells to the bacteria-fighting white blood cells, get to know the unsung heroes and the drama that unfolds inside of you! It's the oddly relatable and interesting story that is the life of cells!
Cast

Kana Hanazawa
Red Blood Cell AE3803 (Erythrocyte) (voice)

Tomoaki Maeno
White Blood Cell U-1146 (Neutrophil) (voice)