There is no known biological term or scientific concept called "leminun cells." It's possible that there's a misspelling or that this is a made-up term.

Could you please clarify what you mean by "leminun cells"? Maybe you meant:

* Lumen cells: These are cells that line the inner surface of hollow organs or structures in the body.

* Lymphoid cells: These are cells of the immune system that are involved in the production of antibodies and other immune responses.

* Leucine cells: There is no such thing as leucine cells. Leucine is an amino acid, not a type of cell.

Please provide more context or information, and I'll do my best to help.