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pH-dependent degradable polymer contrast agent enhances MRI contrast similarly to Magnevist in vivo. Two different image slices are shown for each contrast agent initially, as well as three time points post injection, focusing on (A) the kidneys and (B) the liver. Images are representative of each triplicate. In (A), the solid arrow points to a kidney while the dashed arrow points to the caudal vena cava; in (B) the solid arrow points to the liver.
