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[1] Is this sequence from:
a) pure culture: a culture that contains only one microbial species
or
b) enrichment culture: use of selective culture media to enrich for a set
of microorganisms with a particular phenotypic property, resulting in
a partially purified, mixed culture. Please do not choose this option
for purified strains.
or
c) bulk environmental DNA: PCR-amplified directly from source/host DNA
using:
i) universal primers
or
ii) species-specific primers