Recently two new papers were published: Low affinity uniporter carrier proteins can increase net substrate uptake rate by reducing efflux by Evert Bosdriesz, Meike T Wortel, Jurgen R Haanstra, Marijke J Wagner, Pilar Torre Cortés and Bas Teusink Metabolite Depletion Affects Flux Profiling of Cell Lines by Avlant Nilsson, Jurgen R. Haanstra, Bas Teusink