One minute it was a mix of June and Nevill's the next it belonged to Sheila because of the enzyme AK1, which was also found in RWB's grouping-------which is easy enough to work out since he was in attendance when the 17 baffle silencer was taken apart and how the cut finger of his came into being.
You'd have to know that the blood grouping was the same !
Bamber's defence at trial came up with the mixed blood theory because without that they pretty much had to concede defeat before the trial had even started.
The blood in the silencer matched Sheila's blood groups by way of a number of groupings not just AK1.
The silencer had 15 baffles and there's no evidence Mr Boutflour snr ever handled the silencer under question. The fact his blood groups matched is hardly surprising given 8% of the white British population share those groups. No way he would know his groupings matched Sheila's.
All supporters do is come up with crazy theories eg Mr Boutflour dripped his blood in or Mrs Eaton wrung out Sheila's period blood stained knickers which had been soaking in a bucket of water for around 3 days and dripped this in. Utter madness.