The phrase "a relative expression for" is correct and usable in written English.
It can be used when discussing a term or phrase that conveys a similar meaning or concept to another term.
Example: "In linguistics, 'brother' is a relative expression for 'sibling' when referring specifically to a male."
Alternatives: "a synonymous term for" or "an equivalent expression for".
Thus, after normalization, the relative expression level for a contig having 1 EST from each dataset would result in a relative expression of 3.62X in FGAS compared to NSF-DuPont (a ratio of 1 multiplied by 196,041/54,032).
Upon normalisation, ideally to one or more unaffected internal standards, this approach yields a relative expression value for the target protein.
This resulted in a "fluorescence intensity" versus "PCR cycle" plot allowing for the evaluation of a relative expression (RE) value for each marker.
A normalization index was calculated for each plate as the geometric mean of the expression of the reference genes TUB, GAPDH and histone H3 and a relative expression was calculated for each reaction as the ratio of the gene expression of the gene of interest in each reaction against the normalization index.
(A ) Relative expression by quantitative PCR for Lrh-1.
The expression level of HOXB13 from all normal tissues was averaged to acquire a relative expression level of HOXB13 for each tumour.
A relative expression value was obtained for each gene as the log base 2 ratio of the adjusted intensity for the sample channel versus the reference channel.
In each experiment, a relative expression level was determined for the two pools from each group in triplicate; 3-4 rexperimentsiments were performed, resulting in 18-24 values from each group.
A negative value means a decrease in relative expression for the second timepoint relative to the first.
Thus, although comparing hybridization results across arrays can identify gene expression differences among samples [36], hybridization results from a single sample may not provide a reliable measure of relative expression for different transcripts.
