sisemise tuumamembraani sisepinnal asuv kiuline valkude võrgustik, mille moodustavad intermediaarsete filamentide hulka kuuluvad tuuma lamiinid, The nuclear lamina is a dense (~30 to 100 nm thick) fibrillar network inside the nucleus of most cells. It is composed of intermediate filaments and membrane associated proteins. Besides providing mechanical support, the nuclear lamina regulates important cellular events such as DNA replication and cell division. Additionally, it participates in chromatin organization and it anchors the nuclear pore complexes embedded in the nuclear envelope.