It's utterly pharmaceutical. The consumer market thinks of marijuana in terms of whole strains. The federal government, or more precisely, the National Institute on Drug Abuse (NIDA), which directs UM's program, thinks of marijuana in terms of constituent cannabinoids, with a special focus on THC and CBD. Their marijuana product is distributed in a homogenized form that's mixed to spec, so if you were to place an order from their menu[1], you'd ask for X marijuana cigarettes with "Medium THC / Low CBD." Of course, what NIDA considers high THC (5-10% by weight) doesn't compare all that well with today's products in the legal markets. In Colorado, 16-20% THC plant material is pretty common.
[1] https://www.drugabuse.gov/researchers/research-resources/nid...