Differential sensitivity to hibernation of early and late events in development of the immune response.
D000818:Animals; D000917:Antibody Formation; D000921:Antibody-Producing Cells; D002454:Cell Differentiation; D004912:Erythrocytes / Q000276:immunology; D006462:Hemolytic Plaque Technique; D006605:Hibernation; D007274:Injections, Intraperitoneal; D012589:Sciuridae / Q000502:physiology; D012621:Seasons; D012756:Sheep / Q000276:immunology; D013154:Spleen / Q000276:immunology; D013997:Time Factors