History Manga / CellsAtWork

-->--'''Mission! Health Comes First!''', the theme of ''Cells at Work!''

* ''Cells at Work! Muscle'', which focuses on the muscular system. Illustrated by Yuu Maeda and runs in ''Morning two''.

** Since they are depicted with human-like proportions, the cells are obviously not drawn to scale (though the Platelets are children because IRL they are tiny), because that would mean that Neutrophil would be twice as tall as Red Blood Cell, and [[https://knowyourmeme.com/photos/1401609-hataraku-saibou-cells-at-work Macrophage would tower above them all]] at nearly six times their size! And the Megakaryocyte, the progenitor of the platelets, is bigger than the Macrophage (up to nearly doubling its size)!

** Epithelium and structural cells are depicted as buildings and not as living beings, though being as alive as blood cells are (then again, it would be awkward to show roads and walls made of people stacked together...) Instead, the living component is a "common cell" that lives or works in the building.
** Chapter 15/Episode 10 treats Monocytes and Macrophages interchangeably when biologically they have different development stages, which are typically not reversible. Monocytes are progenitors to Macrophages, and depending on the external signal can also differentiate into Dendritic Cells.

* PeekABangs: U-1146's white hair covers his right eye, as does NK Cell's black hair.

* BladeOnAStick: In chapter 16, U-4989 is seen wielding a pipe, with one of his knives tied to the end by some cloth.

* ''Manga/CellsAtWorkPlatelets'' (''Hataraku Kesshoban-chan''), which focuses on the ever-popular and cute Platelet team from the original manga. Written by Yuuko Kakihara (who was on the anime's writing team) and illustrated by Yasu (of ''LightNovel/{{Toradora}}'' fame), this spinoff runs in ''Monthly Shounen Sirius''. An English translation was released by Kodansha Comics starting in July 2020.

* ExcitedShowTitle: The English title, ''Cells at Work!", ends with an exclamation point, fitting for a lighthearted series. This applies to all its spinoffs as well.

* LuckyTranslation: In the cedar allergy episode, Mast Cell and B Cell argue whose fault the disaster is. In Japanese, Mast Cell asks if the B in B Cell stands for "baka" ("idiot"), which becomes "bonehead" in English.

* DeadpanDoorShut: PlayedFourLaughs. [=AE3803=] is a rookie red blood cell with absolutely {{no sense of orientation}}, and working in a place as complex as the human body is only natural that she gets lost and enters places she shouldn't. On one such occasion, she ends up in the alveolar complex where a hostile bacterium is lurking. She knocks and then opens the door of an alveolar sack hoping to ask for directions. She and the bacterium tensely stare at each other and, after a {{beat}}, she closes the door. The bacterium then burst out of the wall yelling that "don't pretend anything happened!".

* DeadpanDoorShut: PlayedFourLaughs. AE3803 is a rookie red blood cell with absolutely no sense of orientation, and working in a place as complex as the human body is only natural that she gets lost and enters places she shouldn't. On one such occasion, she ends up in the alveolar complex where a hostile bacterium is lurking. She knocks and then opens the door of an alveolar sack hoping to ask for directions. She and the bacterium tensely stare at each other and, after a {{beat}}, she closes the door. The bacterium then burst out of the wall yelling that "don't pretend anything happened!".

* ''Cells at Work! Illegal'' [[/index]] (''Hataraku Saibou Illegal''), which focuses on a body that partakes in drugs and other illegal activities and where the immune system functions like the Yakuza. Written and illustrated by Kae Hashimoto and runs in ''[=YanMaga=] Web''.

* ''Manga/CellsAtWorkCodeBlack'' (''Hataraku Saibou; Black''), a much darker series about the life of cells in an unhealthy body. The human smokes, drinks too much, is under high stress, never exercises, has high cholesterol and does not practice safe sex, leading the cells inside to overexert themselves. The first spinoff not to be written by Shimizu, instead being penned by Shigemitsu Harada and illustrated by Issei Hatsuyoshi. Ran in the {{Seinen}} magazine ''Morning'' from 2018 to 2021. Like the main series, the manga is licensed by Kodansha Comics in North America.

* ''Manga/CellsAtWorkLady'' [[/index]] (''Hataraku Saibou Lady''), having much of the same content [[{{Josei}} but aimed at adult women]]. The second manga written by Shigemitsu Harada, though illustrated by Akari Otokawa. Runs in ''Morning two''.

** Macrophages wear white {{Meido}} uniforms as they are often tasked with cleaning in real life. Their weapons are huge, bladed or blunt weapons such as machetes and mallets. Their hair is a very light brown.

* AlwaysOnDuty: As this is the human body, the cells never have a moment's rest.

** Regulatory T lymphocytes wear an office uniform and headphones with a mic to coordinate other immune cells.