A new study provides the first direct visualization of DNA replication errors as they become mutations in living cells. After decades of post-hoc inference of mutation rates and mechanisms, a new method opens the possibility of cell-, tissue- and cancer-clone-specific mutation-rate detection and real-time visualization of transient hypermutable states in situ.

The precise sequence of events promoting clathrin-coated vesicle assembly is still debated. In this issue, Kadlecova et al. (2017. J. Cell Biol. https://doi.org/10.1083/jcb.201608071) test structural models using quantitative microscopy in living cells to investigate the hierarchy and temporal importance of molecular events required for clathrin-coated pit initiation.

conclusions the results demonstrated that the mortality rate was higher in cf patients with a positive family history, a consanguineous marriage, and residence in a rural area. therefore, demographic factors play an important role in the outcome of cystic fibrosis. unfortunately, these parameters, which can be managed easily and with low cost, have been overlooked. patients and methods this was...