As you probably know from having talked to Ruth Ben-Ishai, we have been quite actively concerned with nucleic acid metabolism,
in so far as induced enzyme synthesis is concerned. You can imagine that I read, with great interest, your recent note from
the Federation Proceedings which you sent to me.
We have been studying a variety of purine and pyrimidine mutants with respect to the same characteristics. You indicated
to Ruth that you do not mind if we studied the thymineless of strain. I would deeply appreciate it if you would send me a
culture of this 15T- strain. Luria had the strain, but apparently it has virtually completely reverted.
I hope I get the opportunity on my next trip East to see you. We have some data which I think you will find of some interest.
With kindest personal regards.