The phrase "a notable difference was that" is correct and usable in written English.
It can be used to highlight a significant distinction between two or more subjects or situations.
Example: "In comparing the two studies, a notable difference was that the first study focused on qualitative data while the second emphasized quantitative results."
Alternatives: "a significant difference was that" or "a key difference was that".
A notable difference was that only 25% of the clinical material was seen at the hospital interface.
A notable difference was that the total soluble protein from tobacco leaves, in comparison to that from seeds, appeared to show some inhibitory effect on the growth of NFS-60 cells, as the cells treated with leaf extracts, with or without hG-CSF, yielded lower proliferation activity than the seed extracts and the control group.
According to the figures, a notable difference is that the pitches of Kuijken's performance are one semitone lower than those of the other violinists' since the instruments are usually used in historically informed performances (HIP), and musicians usually follow the tradition of the period during which the music is composed.
In this story, a notable difference is that Caradoc's challenger is his father in disguise, come to test his honour.
A notable difference is that anaplerotic carbon sources such as malate, that act to replenish TCA cycle intermediate (TCAi) carbon loss due to cataplerosis (i.e., loss of TCAi carbon via export of α-ketoglutarate or its conversion to glutamate) are invariably included in isolated mitochondrial preparations to maintain function.
A notable difference is that 6.0% of all pancreatic cancer cases were diagnosed with DM II compared to 3.3% in the subcohort.
A notable difference is that in three mutants with stamen defects (ISS1, ISS2, and ISS5; Figure 5), no Y-chromosome deletions were detected using any of the Y-linked markers, whereas at least one marker was deleted in previously reported strains with flower mutations (summarized in Bergero et al. 2008).
The only notable difference was that a direct association between SEP and non-TV sitting time was observed on weekend days, but not on weekdays.
The most notable difference was that of a glycosylation motif between E154 and E156.
The notable difference was that JE154 had a greater degree of up regulation in several genes, most notably chalcone synthase homologues.
One notable difference was that between Germany and the Netherlands, where citation rates differ two-fold (citations per publication 5.0 and 11.4 respectively).
