The most common mammalian expression systems are Chinese Hamster ovary (CHO) and Human embryonic kidney (HEK) cells.
* Chinese hamster ovary cell
* Mouse myeloma lymphoblstoid (e.g. NS0 cell)
* Fully Human
** Human embryonic kidney cells (HEK-293)
** Human embryonic retinal cells (Crucell's Per.C6)
** Human amniocyte cells (Glycotope and CEVEC)