| '''انسان''' || ایلو ولائی 100-70= 70–100 m<sup>2</sup><ref name="Basset1987">{{Cite journal| authors=Basset J, Crone C, Saumon G| title=Significance of active ion transport in transalveolar water absorption: a study on isolated rat lung| journal=[[The Journal of physiology]]| volume=384| year=1987| pages=311–324 }}</ref>|| ایلو یلائی اور کیپلری (دو سیل)|| Constant blood flow in capillaries; breathing
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| '''مچھلی''' || Many lamellae and filaments per gill || عام طور پر ایک سیل || Countercurrent flow
