"diminished the expression" is correct and usable in written English.
You could use it to describe a situation in which someone's facial expression (e.g. a smile) weakened or lessened. For example: "The bad news diminished the expression on her face."
Incubation for 18 h with different doses of erythrodiol or uvaol, significantly diminished the expression levels of CD44, while VCAM-1 and ICAM-1 immunoreactivity was markedly increased.
We diminished the expression of Myc by SiRNA targeting Myc.
Expression of XFD, again, diminished the expression of PGC markers, without affecting those of blood.
Subsequent treatment with PD0166285 diminished the expression of CDC2 -pY15 after irradiation.
Cisplatin diminished the expression and phosphorylation of STAT3 protein at 6 h and abrogated them for at least 24 h.
A disruption of both covalent bonds (H94A/C154A) drastically diminished the expression levels, supporting the role of covalent flavin linkages in protein stability.
Missing a single nap led to an increase in children's expression of anxiety and negative emotions, while also diminishing the expression of positive feelings of joy and excitement.
Rather than diminish the expression, understand that "I don't disagree" is the epitome of endorsement, the height of harmony, the apex of agreement -- in other words, in Hollywood, it's as good as it gets.
It was intended to delete the mutant SOD1 gene from the Schwann cells, thereby diminishing the expression of the mutant SOD1 in this cell type.
Thus, it diminishes the expression of HIF-1α target genes.
Thus the KDEL may be necessary for the single-chain antibody protein to diminish the expression of cell surface molecules.
