The membrana between the two cells acted as a selective barrier, allowing only certain ions to pass.

The histologist carefully examined the membranae under the microscope to identify subtle structural differences.

Under the microscope, the botanist noted the leaf's membranaceous texture, which allowed light to filter through its veins.

The scientist studied the membranal properties of the cell to understand how substances pass through it.

The fungus spread membranaceously across the underside of the log, forming thin, translucent sheets.

The membranate wings of the dragonfly shimmered in the sunlight.