RC Cells

[OVERVEIW]
RC (Red Children) cells are certain cells that exist only in the story of Tokyo Ghoul. The origin of the name comes from how each individual cell looks like a curled up fetus. They exist in both humans and ghouls. They flow like blood but can become as solid as teeth, and could be called "liquid muscles". Typically, a ghoul stocks RC cells by eating people. Within the body, the RC cells are concentrated and stored in a kakuhou. The kagune is formed by RC cells that have been released from a kakuhou and have pierced through the skin.

RC cells are the nutrients ghouls need to ingest.

The characteristics of the RC cells differ depending on the Rc type of the ghoul.

[RC FACTOR AND LEVEL]
The RC factor is a measure for the amount of RC cells in the body of a living being. Ghouls have an "RC factor" ten times higher than humans. The average healthy human has an RC factor of about 200 to 500, while a ghoul has an RC factor of about 1000 to 8000. If, for whatever reason, a normal human receives an excessive amount of RC cells, such as through experiments, they will start to develop ghoul-like characteristics and eventually not be able to consume human food.

[RC CELL VESSELS]
RC cells flow through specialized RC cell vessels. They spread from the kakuhou and permit the body to produce a kagune to the outside. The bodily capabilities can increase as much as the number of vessel increases. Vessels grow and spread throughout the body, stimulated through repeated injury and regeneration. Through this process, half-ghouls and quinx become stronger to the degree they're hurt. It is unclear if normal ghouls can become stronger this way, too.