There are three different labeling methods that are commonly used in magnetic cell separation (a) extrinsic magnetic bead labeling, (b) intrinsic magnetic moments, and (c) internalization of magnetic nanoparticles via cell encapsulation. (d–e) Examples of different magnet designs currently used for cell sorting. (d) Conventional MACS platform (e) standard quadrapole magnetic flow sorting and (f) deflection of magnetic moieties within a continuous stream flow stream (d) Adapted from (Miltenyi et al., 1990) (e) Adapted from (Nakamura et al., 2001) (a-c, f) Adapted from (Yun et al., 2013).