Table II.

Immune cell tracking

HSV-TK, herpes simplex virus thymidine kinase; NIS, sodium iodide symporter; NET, norepinephrine transporter; TfR, transferrin recepter; FR, ferritin receptor; QDs, quantum dots; SPIO, superparamagnetic iron oxide; USPIO, ultra-small superparamagnetic iron oxide; CLIO, cross-linked iron oxide; MION, monocrystalline iron oxide; PFPE, perfluoropolyether; ^99mTc-hexamethyl propylene amine oxime (HMPAO), ¹¹¹In-oxine, ¹⁸F-fluorodeoxyglucose (FDG) and ⁶⁴Cu-pyruvaldehyde-bis (N4-methylthiosemicarbazone) (PTSM).