SULKIN.AND ALLEN 

 DISCUSSION 



CAMPBELL: Did you do electrophoretic patterns of the hiber- 

 nating bats ? 



SULKIN: We are doing them now, Dr. Campbell, and we are 

 finding things that I haven't yet had time to sit down and figure 

 out, but we are seeing some very strange things in these elec- 

 trophoretic patterns. I really don't know what to make of it. 



ANDREWES: I understand that viremia is absent in hiber- 

 nating snakes and then comes back again, as in your bats. When 

 they come out of hibernation, is there any evidence in your bats 

 as to whether this is a function of temperature of not; or hasn't 

 that been done ? 



SULKIN: I don't think we have enough data. Perhaps Dr. Marcus 

 knows. I don't think so. 



SCHMIDT: Many times you used the term "simulated hiber- 

 nation". Would you care to define it? 



SULKIN: I suppose I could delete the word "simulated", but 

 I think that when you take a bat away from his natural environ- 

 ment and then try to simulate these circumstances in the lab- 

 oratory, there is a difference. I think that when we net the bats 

 in the fall at the time when they ordinarily would be going into 

 hibernation, we are dealing with true hibernation. This is not 

 the case when such experiments are carried out with bats netted 

 in the summer. Such animals, when placed at low temperatures, 

 are hypothermic.^ 



WALKER: You don't see any difference in your experiments, 

 though, in these two seasons ? 



1 Menaker, J. 1962. Cell and Comp. Physiol. 59: 163-173. 



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