The phrase "a representative isolate of each" is correct and usable in written English.
It can be used in scientific or technical contexts where you are referring to a specific sample that represents a larger group.
Example: "In our study, we collected a representative isolate of each species to analyze their genetic diversity."
Alternatives: "a typical sample of each" or "a standard isolate of each".
Multilocus sequence typing (MLST) was carried out as described previously [21], on a representative isolate of each PFGE type.
This allowed us to test a representative isolate of each group in homologous and heterologous combinations of antigens and antibodies.
The clear difference in symptom severity observed in faba bean for a representative isolate of each group may be a first indication that the two geographically distinct strain groups of CpCSV differ not only genetically and serologically but also biologically (in virulence).
We sequenced the genome of strain ET3-1, a representative isolate of a common bovine mastitis-causing S. aureus clone.
We also assessed the pathogenicity of representative clones from two other epidemic lineages: strain PC184 from the Midwest epidemic strain type [33] produced low virulence, whereas strain J2315, a representative isolate of the ET12 epidemic strain type [34], was one of the most pathogenic.
In order to dissect the genome further, we undertook WGS comparing a representative isolate of ST320 MDR 19A and 19F.
A representative isolate of the ELB agent, the Marseille strain, was characterized and used to develop a microimmunofluorescence test that detected reactive antibodies in human sera.
A whole blood panel created with one representative isolate of each subtype was successfully amplified with the group M HIV-1 integrase and RNase P internal control primers.
To eliminate the bias imposed by the large asexual reproductive capacity and to avoid redundancy in the collection (Chen and McDonald 1996; Kumar et al. 1999), a "clone-corrected dataset" was constructed by including only one representative isolate of each genotype.
spa typing was performed on at least one representative isolate of each PFGE subtype, as previously described [20], and spa types were assigned through the Ridom web server (http://spaserver.ridom.de).
Control "selfed" A. lentulus crosses were also tested on oatmeal agar at 28°C using one representative isolate of each mating type (78-2 [ MAT1-2] and 78-3 [ MAT1-1]).
