The phrase "a slightly different expression" is correct and usable in written English.
You can use it when referring to a variation or alternative way of saying something.
Example: "While the original phrase is effective, I prefer a slightly different expression that conveys the same meaning."
Alternatives: "a somewhat altered phrase" or "a marginally distinct wording".
Expression analyses of SERK1 in Arabidopsis thaliana revealed a slightly different expression pattern, since here the gene was already expressed during megasporogenesis and in late embryo vascular strands [ 53, 54].
In each take, the actor said his line slightly differently — slower, faster, with more or less emotion — and had a slightly different expression on his face, and Tarantino had to choose which would make it into the film.
Ryan, the Jets' coach, wore a slightly different expression this time; he looked as if he had lost something more than a game.
Yet the real interest of politics is in its uncertainty, in how marginal choices produce outcomes that must appear entertainingly arbitrary to the gods who know what would have happened if the coin had fallen the other way, or if a human impulse had chosen a slightly different expression.
By defining the BEM in this way, the resulting channel matrix of the j th OFDM symbol in the frequency domain will admit a slightly different expression than in (5) defined for the single OFDM symbol case: H d ( m, n ) [ j ] = ∑ q = 0 Q W K D { u q [ j ] } W K H D { V L c q ( m, n ) }. (24).
Interestingly, we observed that each of the miRNA clusters we examined showed a slightly different expression pattern in these samples.
A similar but slightly different expression pattern of bZIPs in two inbred lines displays that 22 detected ZmbZIP genes might be involved in drought stress.
In embryos, all three Mi-2 orthologs were expressed with slightly different expression patterns, suggesting that they have different functions during development (see Additional file 1: Figure S4).
(i) In D. buzzatii, both genes are expressed throughout the whole life cycle, although they present slightly different expression patterns (results not shown).
Notably, mRNAs derived from duplicated paralogs showed slightly different expression patterns, although redundancy in some tissues was also observed.
In the present study, both TRH and TSHβ transcripts were detected; however, these genes exhibited slightly different expression patterns during development.
