[cellular_component] cell projection <sep> cytoplasm <sep> extracellular space <sep> melanosome <sep> membrane <sep> microvillus <sep> mitochondrial inner membrane <sep> mitochondrial outer membrane <sep> myelin sheath <sep> myelin sheath abaxonal region <sep> myelin sheath adaxonal region <sep> perinuclear region of cytoplasm <sep> pseudopodium