TY - RPRT TI - A force-dependent switch reverses type IV pilus retraction. AU - Berenike Maier AU - Michael Koomey AU - Michael P Sheetz PY - 2004 DO - 10.1073/pnas.0402305101 UR - https://pubmed.ncbi.nlm.nih.gov/15256598/ ID - 15256598 ER -