@article{S. Jassal2015, author = "Mandeep S. Jassal and Gueno G. Nedeltchev and Jong-Hee Lee and Seong Won Choi and Viorel Atudorei and Zachary D. Sharp and Vojo Deretic and Graham S. Timmins and William R. Bishai", title = "{Exhaled δ13CO2 increased linearly after urea instillation.}", year = "2015", month = "12", url = "https://plos.figshare.com/articles/figure/_Exhaled_13_CO_2_increased_linearly_after_urea_instillation_/503163", doi = "10.1371/journal.pone.0012451.g003" }