cyto-, cyt-, -cyte, cytio-

(Greek: cells, cell, hollow; used primarily in the extended sense of "animal or plant cells" [because cells were originally thought to be hollow])

1. The body of a cell apart from its nucleus.
2. The cell body exclusive of the nucleus.
cytostasis (s) (noun) (no plural)
The inhibition of the growth and division of cells: The treatment of skin diseases and infections or the chemotherapy of cancer uses the method of cytostasis in order to hinder or stop the multiplication of cells.
1. The mutual attraction or repulsion of cells or groups of motile cells.
2. The movement of a cell toward or away from some sort of stimulus.

The stimulus would then be called the cytotaxin.

cytozoic (adjective) (not comparable)
Referring to a parasite living within a cell: A cytozoic organism is a certain tiny form of life that thrives inside a body cell.
cytozyme (s) (noun), cytozymes (pl)
A substance in various body tissues that are capable of activating thrombin or an enzyme that acts on fibrinogen in blood causing it to clot: Cytozyme was the protein in Jane's body fluid that was responsible for stopping the red flow emerging from the cut in her finger when she used the knife to prepare the vegetables.

A cross reference of word units that are related, directly or indirectly, to "cell, cells, cell nucleus": celli-; cellulo-; endothelio-; gameto-; glio-; kary-, karyo-; neuro-.

Here is a general explanation about Cells and their Compositions.