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- ...ology|pathological]] conditions affecting the organs and tissues that make gas exchange possible in higher organisms, and includes conditions of the [[upp ...[bronchioles]], [[alveoli]]) become reduced in volume or have free flow of gas impeded, making it more difficult to move air in and out of the [[lung]].15 كيلوبايت (1٬692 كلمة) - 22:03، 26 فبراير 2013