It makes sense to think that the T3SS didn’t evolve into the bacterial flagellum, but that the bacterial flagellum shed some protein parts to become a T3SS. 

Source

Scientists have finally captured a hidden state of matter, revealing a long-predicted phase with intriguing quantum potential. Researchers from Brown University and the University of Michigan College of Engineering have succeeded in stabilizing a previously elusive state of matter that had existed only in theoretical models. Using carefully engineered nanoparticles as building blocks, the team [...]

Researchers have created a smart wound dressing that can sense when harmful bacteria are present and respond by releasing antibiotics only when needed. Biomedical engineers at Brown University have created a wound dressing that releases antibiotics only when harmful bacteria are detected. In a new study, the team found that the material may quickly eliminate [...]