Micro(nano)plastics are considered an emerging threat to human health because they can interact with biological systems. In fact, these materials have already been found in the human body, such as in the lungs. However, limited data are available on the behavior of these materials under bio-logical conditions and their impact on human cells, specifically on alveolar epithelial cells. The article “Characterizing the interaction between micro(nano)plastics and simulated body fluids and their impact on human lung epithelial cells” authored by Prof. Dr. Aslı BAYSAL from Chemistry Department was published in the “Journal of Environmental Science and Health, Part A” aims to characterize the interaction of micro(nano)plastics with simulated biological fluids. In this study, micro(nano)plastics were exposed to various simulated biological fluids (artificial lysosomal fluids and Gamble’s solution) for 2–80 h. Pristine and treated plastic particles were characterized based on their surface chemistry, zeta potentials, and elemental composition. Various toxicological endpoints (mitochondrial membrane potential, lactate dehydrogenase, protein, and antioxidant levels) were examined using A549 lung carcinoma cells.