To confirm the strain's purity, the lab had to reisolate the bacteria from the contaminated culture.

After culturing the sample twice under sterile conditions, the microbiologist reisolated the bacterium to confirm its identity.

After treatment, the researcher reisolates the bacterium to verify that it survived the procedure.

The lab team is currently reisolating the bacterial strain to confirm whether contamination influenced the earlier results.

During the outbreak, the laboratory mandated reisolation of all contaminated samples to prevent further spread.

The laboratory observed unexpected reisolations of the virus in samples that had previously tested negative.