DISCUSSION 397 



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DISCUSSION 



Medawar: Is there nothing in your evidence so far to exclude a 

 hormonal interpretation ? 



Miller: Nothing at all. 



Medawar: You were talking about experiments in which you hoped 

 to decide w^hether or not thymocytes as such would repopulate a 

 thymectomized mouse. Even if they did, would that exclude a hor- 

 monal interpretation ? 



Miller: Not necessarily. A humoral factor from the thymus could 



