When Salmonella infects a host, it is engulfed by macrophages, cells that are part of the host's immune system. After engulfment, macrophages start increasing the production of reactive oxygen ...

Figure 2: Formation of a phagocytic synapse between an apoptotic cell and a macrophage. But what is different about CD47 on apoptotic cells? One obvious possibility is that CD47 is downregulated ...