SELPLG and neoplasm: The ability of the PSGL-1-retargeted virus to reach a distant subcutaneous tumour following systemic administration was subsequently investigated in a separate study in which PSGL-1-Fc-StrepGpcAd was directly compared with non-modified virus (Adluc) and two control modified viruses (StrepGpcAd and IgG1-Fc-StrepGpcAd).