Editorial preface.
D000818:Animals; D005075:Biological Evolution; D004703:Endocrine System / Q000502:physiology; D006801:Humans; D007107:Immune System / Q000502:physiology*; D009420:Nervous System / Q000276:immunology*; D020078:Neurogenic Inflammation; D015213:Neuroimmunomodulation; D010802:Phylogeny; D011598:Psychoneuroimmunology