"natural base" is a correct and usable phrase in written English.
It is typically used in scientific or mathematical contexts to refer to the base number of a logarithmic scale, or to the fundamental unit of a system of measurement. Example: "In chemistry, the natural base for measuring acidity is the pH scale, which ranges from 0 to 14."
This must have something to do with the prejudice that nature did not select 2,6-diaminopurine as a natural base in its "repertoire" of purines (adenine, guanine and hypoxanthine) and pyrimidines (cytosine, thymine and uracil).
Using unabashed, Soviet-era language, he is picking a culture war with the idea of driving a wedge between the Moscow-based opposition and what is assumed to be his natural base of support among workers in the provinces.
He also had a natural base of support.
Clinton's challenge now is twofold: she needs to make sure that Sandersism doesn't grow beyond his natural base.
Fine examples: "The most beautiful colors, to me, are the ones that respect a woman's natural base," Fritas says.
California is Boyle's natural base of operations (also where he lives) but he'll happily set a story anywhere.
Shortly after 7 P.M., he posted, "So far, Cantor (R) getting crushed in Hanover (the most conservative county), losing Chesterfield (not his natural base), losing rural #VA07".
"It is important to get some support, and the most natural base is those who will benefit from the economic opportunity".
But without London even noticing it, Paris long ago took its place as the natural base for more artistic cult labels, while London continues to flail.
In short, we have deliberately chosen to split our natural base and to cosy up to countries that do not belong to it.
In Floyd Romesberg's lab at the Scripps Research Institute in La Jolla, California, 3FB-3FB joins the natural base pairs of A-T and C-G.
