Genetic Engineering

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Professor Keller is an exponent of genetic engineering and admits to creating The Aqua.

In Episode 4 In The Flesh, Rachel is trapped in an out-of-service lift where she unpacks an Outbreak and Contagion Report. She hears Keller explain that there have been vast improvements since the viral boost, and that the super-fast enzyme is optimising growth rate. This may be a recording of the creation of The Aqua.

She then hears a report where Keller and her father are arguing. Keller is shouting that he is saving his life's work. Max shouts a warning before the audio cuts off.