Two new papers out in the Journal of Bacteriology and Rapid Communications in Mass Spectrometry, respectively, by Caltech collaborator Caj Neubauer on refinements of heavy water lipid-SIP and its application in cystic fibrosis research: Refining the Application of Microbial Lipids as Tracers of Staphylococcus aureus Growth Rates in Cystic Fibrosis Sputum and Towards measuring growth rates of pathogens during infections by D2O-labeling lipidomics. Congrats Caj! See publications for full references and this link for a great commentary on this work by Tara Gallagher, Joann Phan and Katrine Whiteson.