Definition. 1  A blood clot is a thickened mass in the blood formed by tiny substances called platelets. Clots form to stop bleeding, such as at the site of cut. 2  As soon as a blood vessel wall is damagedâby a cut or similar traumaâa series of reactions normally takes place to activate platelets to stop the bleeding.
Series EE bonds mature after 30 years, meaning they can earn interest for that period of time. EE bonds are sold for half of face value and the U.S. Treasury Department guarantees they will reach face value after 20 years. Bonds must be owned for at least one year before redemption.
A: Once again, this answer depends on when the bond was issued. We broke down when a bond reaches its original maturity and when it goes into an extension by years. An extension is the term used for the 10 year period after the bond reaches its original maturity. A bond may enter into an additional 10 year extension. However a bond will never earn interest for more than 30 or 40 years (depending on the issue date of the bond).