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.
Learn how to tie the Surgeonâs Knot. One of the most widely used fishing knots, the Improved Clinch Knot provides a good method of securing a fishing line to a hook, lure, or swivel. Learn how to tie the Improved Clinch Knot. The Trilene Knot, also known as the Two Turn Clinch Knot is great for tying line to snaps, swivels, hooks and lures.