Vesicular homicide.

Here’s an ingenious exploration of the profound impact of the PD-L1 ligand on the immune-tumor interaction, ingenious because we’re not talking about PD-L1 on the tumor. Instead, this basic science inquiry demonstrates independent tumor kill via blocking PD-L1 in exosomes, i.e. circulating extracellular tumor-associated vesicles. | Poggio, Cell 2019