Cloning pool

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	Cloning device
	Sontarans
	DW: The Sontaran Stratagem/ The Poison Sky

A cloning pool was a method of cloning utilised by the Sontarans. During the Sontaran invasion of Earth, Martha Jones of UNIT was cloned, her copy was made from a cloning pool.

A cover is kept on the pool during the early stages of cloning. The pool is filled with a dark green liquid, possibly a form of clone feed, which the clone breathes. The pool is connected to a console that holds a person as their thoughts are copied into the clone which receives them via an umbilical cord.(DW: The Sontaran Stratagem/The Poison Sky)

Cloning pools may be the way Sontarans themselves reproduce.