Nuñez JK, Harrington LB, Kranzusch PJ, et al. (2015) Foreign DNA capture
during CRISPR–Cas adaptive immunity.Nature527:535–538. doi:10.1038/
nature15760
Okabe Y, Medzhitov R (2016) Tissue biology perspective on macrophages.Nat
Immunol17:9–17. doi:10.1038/ni.3320
Okasha S (2006)Evolution and the Levels of Selection. Clarendon Press;
Oxford University Press, Oxford; NY
Ordovas-Montanes J, Rakoff-Nahoum S, Huang S, et al. (2015) The reg-
ulation of immunological processes by peripheral neurons in homeostasis
and disease.Trends Immunol36:578–604. doi:10.1016/j.it.2015.08.007
Osimo EF, Cardinal RN, Jones PB, Khandaker GM (2018) Prevalence and
correlates of low-grade systemic inflammation in adult psychiatric inpatients:
An electronic health record-based study. Psychoneuroendocrinology
91:226–234. doi:10.1016/j.psyneuen.2018.02.031
Ottaviani E, Malagoli D, Franceschi C (2007) Common evolutionary origin of
the immune and neuroendocrine systems: from morphological and functional
evidence to in silico approaches. Trends in Immunology28:497–502.
doi:10.1016/j.it.2007.08.007
OwenRD(1945)Immunogenetic consequencesofvascularanastomosesbetween
bovine twins.Science102:400–401. doi:10.1126/science.102.2651.400
Pamer EG (2014) Fecal microbiota transplantation: effectiveness, complexities,
and lingering concerns. Mucosal Immunology 7:210–214. doi:10.1038/
mi.2013.117
Pamer EG (2016) Resurrecting the intestinal microbiota to combat
antibiotic-resistant pathogens. Science352:535–538. doi:10.1126/science
.aad9382
Pancer Z, Cooper MD (2006) The evolution of adaptive immunity.Annu Rev
Immunol24:497–518. doi:10.1146/annurev.immunol.24.021605.090542
Pariante CM (2015) Psychoneuroimmunology or immunopsychiatry?Lancet
Psychiatry2:197–199. doi:10.1016/S2215-0366(15)00042-5
Parkhurst CN, Yang G, Ninan I, et al. (2013) Microglia promote
learning-dependent synapse formation through brain-derived neurotrophic
factor.Cell155:1596–1609. doi:10.1016/j.cell.2013.11.030
Pastor-Pareja JC, Wu M, Xu T (2008) An innate immune response of blood cells
to tumors and tissue damage in Drosophila.Disease Models & Mechanisms
dmm.000950. doi:10.1242/dmm.000950
Pauken KE, Wherry EJ (2015) Overcoming T cell exhaustion in infection and
cancer.Trends in Immunology36:265–276. doi:10.1016/j.it.2015.02.008
Paul WE (2015)Immunity. Johns Hopkins University Press, Baltimore
References 77