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.
Treating acinic cell cancer. Acinic cell cancer grows quite slowly. It is usually possible to operate to remove it. If the cancer is advanced when it is found, it may not be possible to completely remove it as there are some important nerves very close to the parotid. The nerves could become damaged during the surgery.