This is a video of developing eggs of a Lymnaea snail.
From British daily The Independent:
Scientists at the University of Brighton are close to unlocking the mysteries of the human ageing process, thanks to help from the common pond snail.
They believe the Lymnaea stagnalis will also help provide treatments for diseases afflicting the elderly including dementia and Alzheimer’s.
Dear Kitty. Some blog 
Scientists: century-old drug might cure Parkinson’s, more:
A study with mice suggests a century-old drug could
slow or even cure Alzheimer’s and Parkinson’s
disease, researchers say.
http://www.world-science.net/othernews/080818_blue
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