We have once already (July 2005) advertised for OEDILF (the Omnificent English Dictionary in Limerick Form), and now it’s time (summer-time) to do it again. Here’s mephistopheles‘s simple explanation of a cell membrane:

The membrane designed to divide
Extracellular stuff from inside
Does exceedingly well
At defining the cell
With a border two molecules wide.

Much more here.

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