Interaction energy nonspecific

As shown in Table 2. AGq, AGhb, AGion, A Grot, AGaro, and AGesrep enthalpic terms that describe contributions made by H-bond, ionic, rotational, aromatic, and nonspecific interaction energies. The AG po includes lipophilic... 

Uptake of particles by the epithelium is likely to be enhanced by airway surfactant and could account for the delayed clearance of fine and ultrafine particles from the airways noted in some studies (126,127). Forces from the free energy at interfaces and dividing lines might also contribute substantially to particle-cell interactions. These interactions are considered nonspecific, in contrast with the specific receptor-ligand interactions. Thus, nonspecific interactions could contribute to the uptake of particles by cells that are not professional phagocytes, such as epithelial cells. Epithelial cells of the airways take up particles such as silica and asbestos (128,129). 

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