Dave Cushman beat me to it Re: "There are breeding groups in UK that
have gone to the trouble of
obtaining the Dewar flasks and supplies of LN."

Can't speak as to the use for bees, but -
I was going to suggest contacting "dairy artificial insemination"
service companies in the USA,
as they use LN to keep the straws of semen frozen. Search out a dairy
farm, as most large farms
use the services, and can tell you how to get in touch with places that
have LN.

Leland Hubbell

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