The author was referring to the steam holiday gems. They are a new feature (released yesterday) in which a steam user can turn their extra junk cards/backgrounds/emotes into gems.. These gems can be used to buy more cards; or, during the upcoming holiday event only, to bid on games.
Acinar cells. 1  Acinar cells are the exocrine (exo=outward) cells of the pancreas that produce and transport enzymes that are passed into the duodenum where they assist in the digestion of food.
Acinar Cells (PaA) Acinar cells of the pancreas produce and secrete digestive enzymes, which are secreted to the intestine by a branched ductal network. The bulk of the mature pancreas is comprised of acinar cells. Acinar cells are also involved in pathological processes and are the initiating cell type for precursor lesions of pancreatic cancer.