Fig. 1From: Derivation of first-order dissolution rates to estimate particle clearance and burden in the human respiratory tractCompartmental model used to represent mass transfer among regions. ET, extrathoracic; GI, gastrointestinal; Int/Lym, interstitial and lymphatic; PU, pulmonary; TB, tracheobronchial; and λET, λTB, and λPU are first-order rate constants for dissolution for respiratory tract regionsBack to article page