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.
Acral Lentiginous Melanoma. Acral lentiginous melanoma (ALM) is a form of lentiginous melanoma that typically originates on the feet, hands, toenails, fingernails, and inside mucous membranes. ALM accounts for only 5% of melanoma cases in the United States, but is the leading cause of skin cancer deaths.