The ingredients were launched after several years of research and product development, alongside advances in traditional cross breeding of the stevia plant. (foodprocessing-technology.com)
It is the product of several years of research into the best breeding practices for the health and welfare of puppies. (petbusiness.com)
You've made scientific sense of several years of research data, pulled your results into nifty figures, and gone through several drafts of narrative. (sciencemag.org)