"mainly active in" is correct and usable in written English.
You can use it when talking about a subject that does something mainly in one particular area or field. For example: "John Smith is mainly active in environmental conservation projects."
Similarly, kinase genes mainly active in immunological/hematological tissues were identified (63.3% activity in these tissues vs, 11.3-16.7% in other tissue groups).
After its demise Mr. Morganelli established Jazz Forum Arts, a nonprofit presenting organization mainly active in Westchester County, where he now lives.
The Apache leaders Geronimo, Cochise, and Victorio, though mainly active in Arizona, also made forays into southwestern New Mexico.
The Royal Bank of Canada's RBC Centura unit, which is mainly active in the southeastern United States, Toronto-Dominion's TD Bank, which covers the Northeast, and the Bank of Montreal's Harris Bank, based in Chicago, have not been similar experiences.
(Chinen) Either/Orchestra (Wednesday) The slinky, pentatonic music of Ethiopia has been a steadfast preoccupation of the Either/Orchestra, a big band mainly active in and around Cambridge, Mass.
Its jihadists are mainly active in the Sinai Peninsula, where they claimed to have bombed a Russian passenger plane with 224 people on board in October, and have also claimed responsibility for attacks in Cairo, the western desert and Nile delta.
While we observed c-Myc binding to mainly active genes in ES cells, c-Myc was bound to a minimal set of inactive genes.
Additionally, by evaluating Stat3 and c-Myc ChIP-chip target gene expression profiles in undifferentiated ES cells and differentiated EBs, we observed Stat3 binding to both active and inactive genes, while c-Myc was bound to mainly active genes in ES cells (Figure 8).
The acquisition will give Ooyala a much stronger, in-house advertising play on top of its video services, and it will likely see Videoplaza, which has mainly been active in Europe and Asia-Pacific, move further into the U.S. market.
HFOV mainly differs from HFJV by active in- and expiration, whereas HFJV only uses active inspiration and passive expiration.
We detected FOXP3+ T cells mainly in active lesions.
