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 essentially a contract between an investor and an investment bank or a spread-betting firm.At the end of the contract, the parties exchange the difference between the opening and closing prices of a specified financial instrument, including shares or commodities. CFD is simply an agreement between two parties â the investor and the CFD provider â to pay each other the change in the price of an underlying asset. Depending on which way the price moves, one party pays the other the difference from the time the contract was agreed to the point where it ends.