The phrase "are a prominent source" is correct and usable in written English.
It can be used when discussing entities or factors that significantly contribute to a particular outcome or phenomenon.
Example: "The researchers found that social media platforms are a prominent source of information for young adults."
Alternatives: "are a major contributor" or "serve as a key source."
In addition, lightning strikes are a prominent source of broadband radio emissions that are visible over very long distances.
Mitochondria are a prominent source of ROS within the cell.
M2 macrophages are a prominent source of TGF- β, which promotes many aspects of wound repair including chemotaxis, wound contraction, angiogenesis, reepithelialization, and connective tissue regeneration [ 5].
Emissions from diesel engines are a prominent source of particulate matter, and diesel exhaust particles (DEP) are classified by the U.S. Environmental Protection Agency as a likely carcinogen.
By using a segregating genetic system to study the breadth, distribution and dynamics of CNVs, we reveal an extremely plastic parasite genome in which CNVs are a prominent source of diversity and maybe an overlooked substrate for selection.
Endothelial cells and fibroblasts, in particular senescent fibroblasts, are a prominent source for oxygen radicals, but at the same time they turn into these radicals targets which by converging mechanisms arrest cell proliferation and induce apoptosis [ 102].
Later in 2004 Kerry formed a political action committee that was a prominent source of funding for Democratic candidates in subsequent elections.
Stock buybacks were a prominent source of strength in the bull market of the 1990's, but the level has fallen drastically in recent months as corporate profits have deteriorated.
Mass media has always been a prominent source of science information for the general public, and more so than academic journals.
Even though protein is a prominent source of energy in fish, stress preferably causes depletion of glycogen and lipid reserves instead of proteins (Mckee and Knowles 1986; Heath 1987; Giesy and Graney 1989).
Another commodity that was a prominent source of trade was the production of sugar from the crop sugar cane.
