Stimulants

... hormone (LH) and ascorbate are known to augment the production of oxytocin in ovarian granulose cells, varying concentrations of these two stimulants were used to monitor the biosynthesis of oxytocin from isolated Leydig cells in culture. Highly enriched populations of guinea pig Leydig ...

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... under a microscope or count them in a chamber, or just look at the colour of your medium? What cells do you use? For example T cells need proper stimulants to make them divide (e.g. PHA if you want unspecific proliferation), as well as the feeder cells. It is easy to think your cells proliferate, ...

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I seem to recall a similar study in which electrical stimulants could, quite literally, 'steer' a walking Human Being through a maze.

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