This week in Biology and Chemistry

Freshwater Sponges Have Functional, Sealing Epithelia with High Transepithelial Resistance and Negative Transepithelial Potential

Cryo-EM structure of the E. coli translating ribosome in complex with SRP and its receptor

Rapid evolutionary innovation during an Archaean genetic expansion

Select: Stem Cell Reprogramming

Integrative Analysis of the Caenorhabditis elegans Genome by the modENCODE Project