It’s a big move toward better understanding Alzheimer’s.

Scientists in Boston have re-created the effects of the disease on brain cells – by using a gel medium to help grow networks with brain cells – from embryonic stem cells.

Then, they introduced Alzheimer’s disease genes – and were amazed to see plaques and tangles developing – the two characteristic symptoms of the disease.

The study says the breakthrough procedure supports the long-standing theory – that one of the causes of plaque and tangle build-up in the brain – is the production and accumulation of beta amyloid protein.

The Massachusetts General Hospital study is published in the journal “Nature.”