intracellular

Occurring or situated within a cell or cells.

Existing or done inside of a cell: opposed to extracellular: as, intracellular circulation or digestion; intracellular formation of spores in certain fungi. Most of the vital activities or functions of the Protozoa are intracellular.

Within a cell. Contrasted with extracellular.

Inside or within a cell.

located or occurring within a cell or cells