Complex sentence: The deposition of nanoparticles in the respiratory tract is determined by the shape and size of particles or their agglomerates, and they are deposited in the lungs to a greater extent than larger respirable particles.
Split into simpler sentences: The deposition of discrete nanoparticles in the respiratory tract is determined by the shape and size of particles or their agglomerates. Discrete nanoparticles are deposited in the lungs to a greater extent than larger respirable particles.