Stem cells are the body's raw materials â cells from which all other cells with specialized functions are generated. Under the right conditions in the body or a laboratory, stem cells divide to form more cells called daughter cells. These daughter cells either become new stem cells (self-renewal) or become specialized cells (differentiation) with a more specific function, such as blood cells, brain cells, heart muscle or bone. No other cell in the body has the natural ability to generate new cell types.
(December 2011) (Learn how and when to remove this template message) The hangman's knot or hangman's noose (also known as a collar during the Elizabethan era) is a well-known knot most often associated with its use in hanging a person.
It creates a reliable, moderately large, stopper knot. Double Overhand Threading End. Double Overhand Threading End. Alternative Method: In addition to the technique shown in the animation, the Double Overhand can also be tied by threading the end of the rope through the coil as shown here.ouble Fisherman's Knot. The Double Overhand provides the basis for other useful knots, e,g, the Double Fisherman's Knot and the Poacher's Knot or Double Overhand Noose.