An air lock for feeding animals in a small environmental chamber.
D000818:Animals; D000830:Animals, Laboratory / Q000502:physiology*; D001274:Atmospheric Pressure; D001698:Biomedical Engineering; D004435:Eating; D004777:Environment; D005502:Food; D009747:Nutritional Physiological Phenomena; D010827:Physiology / Q000295:instrumentation*