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I am sorry to have to tell you that I cannot comply with your request for cultures of poky. We have not yet made this strain
available for general distribution and have sent it to other laboratories only in a few instances when we were assured that
the work planned would not duplicate ours or that of Drs. Tissieres and Gowdridge. As it happens, Dr. Gowdridge began work
on the problem of the behavior of heterokaryons involving poky and not. poky strains when she was here in 1953 and has continued
this work since returning to Britain. She has shown that it is a difficult problem on which to reach a conclusion and although
my husband mentioned some of her results at Bellagio last year and she has I believe, presented a paper on them in England,
she plans to do more work before publishing the results in full. For this reason we do not feel free to send
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the strain to some one else for the same problem. I feel certain that you will understand our position on this. Perhaps
by the time you have finished your observations on yeast her results with Neurospora will be available for comparison.
With regard to my trials with mixed cultures, I would most certainly not say that they gave the last word, or even the first
on heterokaryons since I did not show that heterokaryons were formed. We only put that in the papers because one of the questions
most frequently asked us about poky has been, "what happens when you make a heterokaryon", so we thought we should
say that we didn't know.