ALB and acute myocardial infarction: Wang et al. reported nanocomposites of albumin with pH-responsive MnO2 NPs (MnO2@BSA) for T1w MRI of acute myocardial infarction (AMI) in rabbit models, using nanocomposites of albumin with non-pH-responsive Gd2O3 NPs (Gd2O3@BSA) as a positive control.