The other nine blots were used to measure the expression levels of individual genes.

These function to regulate the expression levels of other genes by several mechanisms.

The calculated average difference was used as the measure of expression levels throughout this analysis.

Therefore, for each gene, their expression level can take one of four possible values of 0, 1, 2 and 3.

Those expression levels must be compared to each other.

These clusters were very small and expression levels were low.

Are genes with a low expression levels in all conditions detected?

We also looked at the variance of the expression levels within the cell types.

This approach, however, does not take into account the expression levels of individual genes in each cell line.

Further, their expression levels are observed to be very low.