Summer Hibernation Induced by Cryogenically Preserved Blood "Trigger"

Science  24 Apr 1970:
Vol. 168, Issue 3930, pp. 497-498
DOI: 10.1126/science.168.3930.497


Summer hibernation induced by transfusions of blood (serum, cells, or whole blood) from hibernating ground squirrels and woodchucks demonstrates that (i) this "trigger effect" can be preserved cryogenically in vitro for at least 5 months, (ii) it cross-reacts between these species of hibernators, and (iii) its effectiveness relates to the donor's previous hibernation history.