The Zoo has been following the work of the Zoological Society of London and this evening it looks at the ground-breaking work being done at the Bedfordshire attraction involving chimps and heart surgeons.
Click above to watch ITV News Anglia's Olivia Paterson report
More top news
A butterfly that was extinct in England for more than 40 years is being returned to Rockingham Forest in Northamptonshire.
Sunny spells for many today with showers tonight
A learner driver has been jailed for 16 months for a crash in Saffron Walden, Essex which left a six-year-old boy with serious injuries.