Bell T, Hill N, Mogle J, Sweeder L, Bhargava S. Longitudinal evaluation of perceived stress and memory complaints in the Einstein Aging Study. Anxiety Stress Copin. 2021 Jan;34(1):37-50. doi: 10.1080/10615806.2020.1836621
Juliao P, Marrs CF, Xie J, Gilsdorf JR. Histidine auxotrophy in commensal and disease-causing nontypeable Haemophilus influenzae. J Bacteriol. 2007 Jul;189(14):4994-5001. doi: 10.1128/JB.00146-07
Pearson IV, Page MD, van Spanning RJM, Ferguson SJ. A mutant of paracoccus denitrificans with disrupted genes coding for cytochrome c550 and pseudoazurin establishes these two proteins as the in vivo electron donors to cytochrome cd1 nitrite reductase. J Bacteriol. 2003 Nov 1;185(21):6308-15.