129 
DR. HELINSKI: Yes. 
MS. SIMRING: And if it occurs rarely naturally, and in laboratories — 
I think there are 300 projects, not of course on this level, but 300 DNA 
projects in this country alone. You would be multiplying to perhaps high 
frequencies comparatively, a rare natural event which would, it seems to me, 
sharply increase the chance of biologic mishap. 
DR. HELINSKI: Weil, if you were talking about factors of 10 ' and you 
multiply them by 300, you are still in a very low probability category. 
DR. FREDRICKSON: I think, ladies and gentlemen, you have bravely 
come with me all this way to this point. I am going to suggest that we 
now adjourn. Dr. Helinski will be back with us immediately after our recon- 
vening after dinner. We will start, though, with Dr. Rowe on this crucial 
and vital problem of virus levels, then Dr. Zaitiin on plants, and you will 
still have the opportunity to discuss with the presenters their presentation 
and points of view. 
A word about the restaurant system at NIH. The only functioning cafe- 
teria at this hour is in Building 10, the Clinical Center, which you can 
still enter by the side door before 6:00 o'clock. Otherwise you will have 
to go around to the back. Or, you may want to go into Bethesda. 
But whatever you choose to do, it is very important that we reconvene 
here again at 7:30. Now, you must come in the C entrance or the A entrance, 
and I don't think you know where the B is anyway, so forget about it. 
(Laughter . ) 
Your things will be safe here. We will see you at 7:30. 
The meeting stands adjourned. Thank you. 
(Thereupon, at 5:20 p.m. , a recess was taken until 7:30 p.m. , the same 
day . ) 
[ 333 ] 
