Proliferate [verb]

Definition of Proliferate:

grow rapidly; spread; multiply; increase quickly

Synonyms of Proliferate:

Opposite/Antonyms of Proliferate:

Sentence/Example of Proliferate:

The cells of this hypertrophied portion show a great tendency to proliferate and produce new nerve structure.

What is the nature of the "life" in the parasitic sarcomatous tissue which has been seen to proliferate for a short time in vitro?