“…In the development of drug delivery systems, microparticles offer several advantages, such as the capacities for retaining loaded drugs, controlled drug release, and encapsulation of low-molecular-weight drugs and biomolecules. , Layer-by-layer deposition of the shells allows controlling the resultant characteristics of the MPs, including their size, charge, surface chemistry, structure, and rigidity. − A wide variety of cores, polymers, and surface groups are used to fabricate MPs finely tuned for specific applications . During the fabrication of the MPs, different agents can be introduced into the polyelectrolyte shell, such as fluorescent labels, quantum dots, and magnetic particles, , and their surface can be functionalized with capture molecules, , which extends the use of the MPs in bioimaging and smart drug delivery.…”