All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures [goid 5737] [evidence IEA]; That part of the cytoplasm that does not contain membranous or particulate subcellular components [goid 5829] [pmid 10747907] [evidence TAS]; Any of the various filamentous elements that form the internal framework of cells, and typically remain after treatment of the cells with mild detergent to remove membrane constituents and soluble components of the cytoplasm. The term embraces intermediate filaments, microfilaments, microtubules, the microtrabecular lattice, and other structures characterized by a polymeric filamentous nature and long-range order within the cell. The various elements of the cytoskeleton not only serve in the maintenance of cellular shape but also have roles in other cellular functions, including cellular movement, cell division, endocytosis, and movement of organelles [goid 5856] [evidence IEA]; Any multimeric complex connected to a microtubule [goid 5875] [pmid 10747907] [evidence TAS]; The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins [goid 5886] [evidence ISS]; The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins [goid 5886] [pmid 8522593] [evidence IDA]; The long process of a neuron that conducts nerve impulses, usually away from the cell body to the terminals and varicosities, which are sites of storage and release of neurotransmitter [goid 30424] [evidence ISS]; The long process of a neuron that conducts nerve impulses, usually away from the cell body to the terminals and varicosities, which are sites of storage and release of neurotransmitter [goid 30424] [pmid 8642405] [evidence IDA]; The migrating motile tip of a growing nerve cell axon or dendrite [goid 30426] [evidence ISS]; The migrating motile tip of a growing nerve cell axon or dendrite [goid 30426] [pmid 8642405] [evidence IDA]; A prolongation or process extending from a cell, e.g. a flagellum or axon [goid 42995] [evidence IEA]; A heterodimer of tubulins alpha and beta that constitutes the protomer for microtubule assembly [goid 45298] [evidence ISS]; A heterodimer of tubulins alpha and beta that constitutes the protomer for microtubule assembly [goid 45298] [pmid 8642405] [evidence IDA]