The exchange dynamics of biomolecular condensates.

A hallmark of biomolecular condensates formed via liquid-liquid phase separation is that they dynamically exchange material with their surroundings, and this process can be crucial to condensate function. Intuitively, the rate of exchange can be limited by the flux from the dilute phase or by the mixing speed in the dense phase. Surprisingly, a recent experiment suggests that exchange can also be limited by the dynamics at the droplet interface, implying the existence of an 'interface resistance'.

A pause in pediatrics: implementation of a pediatric diagnostic time-out.

Objectives: Diagnostic errors are frequently the product of cognitive biases that arise when heuristic-based approaches fail. The efficiency-thoroughness tradeoff (ETTO) principle states sacrificing thoroughness for efficiency is normal and occurs frequently in medicine. The goal of a diagnostic timeout was to provide an actionable template for when providers transition to an analytical mindset and to help incorporate the ETTO principle during the diagnostic process.