These folds may have led to the specialization of internal membranes to maintain communication with the environment.

The thing extruded its own internal membrane and spread it over Hoom's pieces.

Eukaryote cells have many different internal membranes and structures, called organelles.

And all her internal membranes began to disintegrate.

The cells contained paired internal membranes which are arranged towards their periphery.

They also characteristically have a system of internal membranes within which methane oxidation occurs.

Amniotes' eggs, however, have internal membranes which allow the developing embryo to breathe but keep water in.

The cholesterol is released and is incorporated into the cell's internal membranes.

It's only natural that the light could be seen through translucent internal membranes.