Both Classical (MC catalog codes) and Encapsulated (ME catalog codes) superparamagnetic microspheres are synthesized using a process that results in the distribution of iron oxide crystals throughout the polymer matrix. The surfaces of Encapsulated magnetic microspheres are expected to be free of iron oxide, while the Classical version will have some exposed iron oxide. COMPEL microspheres (UMC catalog codes) are highly uniform and spherical. Fluorescent magnetic microspheres are available as ~1% solids (w/v) aqueous suspensions in four standard volumes: 1mL, 5mL, 10mL, and 100mL. 

PDS 731, Fluorescent Microspheres
PDS 705, COMPEL™ Microspheres
TSD 0748, Fluorescent Magnetic Particles for Cell Labeling and Tracking
Fluorescence Spectra
SDS MF220, (MC and ME Fluorescent Magnetic)
SDS MF221, (COMPEL™ Fluorescent)

Catalog Number Description Fluorescence Color Nominal Diameter Specification Range
MCDG001 Classical Magnetic Polymer-COOH Dragon Green 0.9µm 0.50 - 2.00µm
MCFR001 Classical Magnetic Polymer-COOH Flash Red 0.9µm 0.50 - 2.00µm
MEDG002 Encapsulated Magnetic Polymer-COOH Dragon Green 1.63µm 0.50 - 2.00µm
MESY002 Encapsulated Magnetic Polymer-COOH Suncoast Yellow 1.63µm 0.50 - 2.00µm
MEGB002 Encapsulated Magnetic Polymer-COOH Glacial Blue 1.63µm 0.50 - 2.00µm
MEFR002 Encapsulated Magnetic Polymer-COOH Flash Red 1.63µm 0.50 - 2.00µm
UMGB001 COMPEL™ Magnetic COOH modified Glacial Blue 3µm 2.50 - 3.50µm
UMDG001 COMPEL™ Magnetic COOH modified Dragon Green 3µm 2.50 - 3.50µm
UMEG001 COMPEL™ Magnetic COOH modified Envy Green 3µm 2.50 - 3.50µm
UMFR001 COMPEL™ Magnetic COOH modified Flash Red 3µm 2.50 - 3.50µm
UMGB002 COMPEL™ Magnetic COOH modified Glacial Blue 6µm 5.50 - 6.50µm
UMDG002 COMPEL™ Magnetic COOH modified Dragon Green 6µm 5.50 - 6.50µm
UMFR002 COMPEL™ Magnetic COOH modified Flash Red 6µm 5.50 - 6.50µm
UMGB003 COMPEL™ Magnetic COOH modified Glacial Blue 8µm 7.50 - 8.50µm
UMDG003 COMPEL™ Magnetic COOH modified Dragon Green 8µm 7.50 - 8.50µm
UMFR003 COMPEL™ Magnetic COOH modified Flash Red 8µm 7.50 - 8.50µm


References

Hill, J, Dick, A, Raman, J V,  Thompson. R , Yu. Z , Hinds, K ,…Lederman, R (2003) Serial Cardiac Magnetic Resonance Imaging of Injected Mesenchymal Stem Cells Circulation.108:1009-1014

Shapiro E M, Sharer K, Skrtic S, and Koretsky, A. P. (2006) In vivo detection of single cells by MRI. Magn. Reson. Med., 55: 242–249

Shapiro, E M, Medford-Davis, L N, Fahmy, TM, Dunbar, CE, Koretsky, AP (2007 Antibody-mediated cell labeling of peripheral T cells with micron-sized iron oxide particles (MPIOs) allows single cell detection by MRI. Contrast Media Mol Imaging, 2: 147–153

Shapiro, E M, Gonzalez-Perez, O, García-Verdugo, JM, Alvarez-Buylla, A, Koretsky, AP (2006) Magnetic resonance imaging of the migration of neuronal precursors generated in the adult rodent brain. NeuroImage, 32(3), 1150–1157