Similarly, Lee et al.440 conjugated lipid-coated superparamagnetic MIONPs with PD-L1 antibodies (25.8 ± 1.8 nm hydrodiameter) for the identification of PD-L1 expression in glioblastoma, highlighting the importance of antibody–NP conjugates in molecular imaging and targeted therapy. Here, CD274 is linked to glioblastoma.