Dr Randolph Corteling and senior scientist Julie Heward are part of a team in UK that is testing foetal stem cell therapy to cure the killer diseases of old age - a covert operation that could save millions of lives or could be labelled as 'cannibalisation of children'.
But there is another reason for the secrecy - these cells have potentially huge commercial value if human clinical trials succeed.
The new trial aims at pioneering a technique that could see stem cells available to the mass market, off-the-shelf. And it would not prevent disease, it would be a cure.
The treatment will involve a hole of about a quarter- of-an-inch being drilled into the patient's skull, held in place by a vice, and a specially designed syringe or 'delivery device' dispersing the liquid containing neural foetal stem cells into the stroke-damaged part of the brain.
Whoever successfully develops mass stem cell therapies that can cure killers such as stroke, heart disease, diabetes or Parkinson's will have found the holy grail of medicine and turned science fiction into fact.
The trial has been performed in rats already. The cells are injected into the damaged area of the brain where they regenerate and multiply - leading to new connections in the brain.