Gilrandir vs Immune "System"

[Gilrandir]

There is a system and also coordination going on in the immune system. If not so much between organs, there is certainly coordination between cells: http://kidshealth.org/en/parents/immune.html

Cells are not organs. All cells are in a way connected, not so the organs. Thus, not a system.

[Husar]

Cells are not organs. All cells are in a way connected, not so the organs. Thus, not a system.

The organs don't need to be connected for it to be a system, what are you talking about?
You sound like you're saying the human body is not a system because the left foot is not directly connected to the right foot.