Q:

Membrane material in Cycles?

I'm using Blender Cycles to model a strand of DNA. Ideally, I'd like to make certain parts of the model look like they're encased in a clear, sticky membrane, like this: 

How would I make this material with the Cycles Node Editor?

A:

More or less something like that ?

The membrane is simply a mix between glass and glossy and a manual adjustment of a fresnel node to handle the mix factor.

The DNA is base on the same principle, but with diffuse and emission :

But for the sticky effect this is mainly a displacement texture (a cloud texture) on the membrane :

