TY - RPRT TI - Strong purifying selection on codon usage bias AU - Machado, H. E. AU - Lawrie, D. S. AU - Petrov, D. A. PY - 2017 DO - 10.1101/106476 UR - https://www.biorxiv.org/content/10.1101/106476v1 ID - 10.1101/106476 ER -