So not only does the collar have to withstand enormous force but it needs to contain a GPS device, a cellcomponent for data transmission, and battery power for a full year.
The team of researchers, led by Dr Anastasis Stephanou, carried out laboratory tests on heart cells which found that a major chemical component of green tea known as epigallocatechin-3-gallate (EGCG) can reduce cell death after a heart attack or stroke.