Emotional stress and modulation of immunological reactivity.
D000818:Animals; D000917:Antibody Formation; D001143:Arousal / Q000502:physiology*; D001362:Avoidance Learning / Q000502:physiology; D004644:Emotions / Q000502:physiology*; D007030:Hypothalamo-Hypophyseal System / Q000502:physiology; D007108:Immune Tolerance; D007121:Immunocompetence; D008213:Lymphocyte Activation; D051381:Rats; D012153:Retention, Psychology / Q000502:physiology