To ensure presence of a representative bacterial sample in all cases and absence of PCR inhibiting substances, we performed a broad-range PCR assays applying eubacterial 16S rRNA-based primers and subjecting all samples obtained by the toothbrushing method.
In the time period studied, all bacterial samples in Norway have been sent to a medical microbiological laboratory at the regional hospital for testing.
In the time period studied, all bacterial samples in Norway, with few exceptions, have been sent to a medical microbiological laboratory at the regional hospital for testing.
Classification of a metabolomics data set consisting of 9303 headspace (gas-phase) GC-MS metabolomics-based measurements (variables) for 45 different bacterial samples resulted in a classification (OOB) error of 71% (results not shown).
The heterogeneity and structural diversity of lipid A molecules within a bacterial sample poses a significant analytical challenge in chemical characterization of complex lipid A mixtures and impedes their development as vaccine adjuvants.
To assess the sensitivity of PCR/LDR in identifying a mixture of alleles in a bacterial sample, genomic DNA was prepared from a culture of BP370*, a strain that was isolated during a single passage of BP370 on BG blood agar.
Agar, for example, the gel in which bacterial samples grow, has a strong smell that is "really divisive," provoking extreme disgust in some, and attraction in others.
Unsupervised principal component analysis (PCA) was performed to investigate chemical variations in the bacterial samples by constructing a cluster-based segregation model (Huang et al. 2004).
To avoid debris, electronic background, and undesired clumps in the bacterial samples, a Gate R1 was set up, which was based on light scatter for the flow cytometry assay.
A typical chromatogram from bacterial sample analysis is shown in Fig. 4, identifying UP, 7P, CPI, CPIII, and PPIX.
