The phrase "it mostly includes" is correct and can be used in written English.
It is typically used when describing the main components or elements of something. Example: The course syllabus is very comprehensive, but it mostly includes lectures, readings, and individual assignments.
The show originated at the Artforms Gallery in Philadelphia, and it mostly includes artists from that area.
It mostly includes chipping, grinding, and/or milling techniques.
No detailed blood analysis is available for Malatesta's study, as it mostly includes histochemistry at the ultrastructural level; moreover, the latter tests have not been used to obtain the commercial release by the firm.
On the other hand, CGV is similar to other full syllables, likely because it mostly includes full syllables, more accurately represented as [CGVː]; this is confirmed by a search through 现代汉语词典 Xiàndài Hànyǔ Cídiǎn Modern Chinese Dictionary (Chinese Academy of Social Sciences 中国社会科学院 2005), where unstressed syllables are dominantly CV.
Gene-level signal was estimated by the IterPlier algorithm, and it mostly includes the expression level of constitutive exons, which reflects gene expression regulation at the level of transcription and/or RNA stability but not splicing.
It has mostly included spots alleging changes in Mr. Kerry's positions on everything from education to the war in Iraq.
It seems odd that a show inspired by a group activity mostly includes works by individuals.
This latest version mostly includes bug fixes, though, and isn't exactly a major release.
The two SABER OH VER channels are at 1.6 µm, which mostly includes the OH (4-2) and OH (5-3) bands, and 2.0 µm, which mostly includes the OH (8-6) and OH (9-7) bands.
Strikingly, that list mostly includes commercial products that cost money while producing a negative effect.
That mostly includes vegetables and fruits that are misshapen and deemed too "ugly" for supermarket shoppers to buy.
