the.com/membranes
Nature's bouncers, deciding what gets into the club and what stays out.
means Thin, flexible barriers that separate spaces and selectively control what passes through them.
from From Latin membrana, the skin covering body parts, itself from membrum, a limb or member.
Picky gatekeeperCell membranes let some molecules pass, block others
Tiny but mightyCell membrane is only ten nanometers thick
Beyond biologyUsed industrially to desalinate seawater into drinking water