Oral mucocele (also termed mucous retention cyst, mucous extravasation cyst, mucous cyst of the oral mucosa, and mucous retention and extravasation phenomena) is a clinical term that refers to two related phenomena:1  Mucus extravasation phenomenon.ral mucocele (also termed mucous retention cyst, mucous extravasation cyst, mucous cyst of the oral mucosa, and mucous retention and extravasation phenomena) is a clinical term that refers to two related phenomena:
A CFD, or Contract for Difference, is an agreement between two parties to exchange the difference between the opening price and closing price of a contract. CFD, or Contract for Difference, is an agreement between two parties to exchange the difference between the opening price and closing price of a contract.
A contract for difference (CFD) is a that allows to into an without actually owning the asset. The CFD is a contract between two parties (the buyer and the seller). It states that the seller will pay the buyer the difference between the current value of an asset and its value at contract time. If the difference is negative, the buyer pays the seller instead.