The term “oligonucleotide” or “oligo” usually refers to a synthetic laboratory-made DNA or RNA strand. Oligonucleotides are used in biochemistry, biology, molecular diagnostics, genomics, and other molecular biology experiments.
質體可能會以：纏繞程度不同的環狀、部分分裂或是線狀，以及串聯多聚體等不同構型呈現。常見的構型類別為：covalently closed circular (ccc) form, the open circular (oc) form (也稱作 “nicked form”), linear form(經過限制酶digest)
