Figure 4.

DNA extraction efficiency as a function of cell type quantified by qPCR. Cell types are labeled as follows: B. cereus (spore), BCS, S. cerevisiae, SC, B. cereus, BC, B. thailandensis, BT, E. coli, EC. Vertical lines indicate the dispersion of the data; replicate outliers are indicated as ▲ data points. Black letters (a, b, c) indicate statistical differences within each plot, based on a Tukey’s HSD test with p < 0.05, when the outliers were excluded in the analysis. Plots are grouped by extraction method. Scales are independent for each graph due to the large range in responses

Olson and Morrow BMC Research Notes 2012 5:668   doi:10.1186/1756-0500-5-668
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