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.
Bowline One of the most useful knots you can know. The Bowline forms a secure loop that will not jam and is easy to tie and untie.The Bowline is most commonly used for forming a fixed loop, large or small at the end of a line. Tried and tested over centuries, this knot is reliable, strong and stable.Even after severe tension is applied it is easy to untie.owline One of the most useful knots you can know. The Bowline forms a secure loop that will not jam and is easy to tie and untie.