In medicine, a<unk>  is a procedure in which a piece of<unk>  tissue is removed from an organism and examined microscopically. A<unk>  can lead to the discovery of problems with the nervous system, connective tissue, vascular system, or musculoskeletal system.
Muscle biopsy
Nerve biopsy
Nerve conduction study
Electromyography
Myelography
Bone biopsy
Cervicography
Magnetic resonance myelography