fig1
Figure 1. Classification of microneedles. Microneedles are divided into two main categories based on their degradability: non-degradable microneedles and biodegradable microneedles. Non-degradable microneedles include solid, coated, and hollow microneedles. Biodegradable microneedles include hydrogel microneedles, core-shell microneedles, and cryoMNs. cryoMNs: Cryo-microneedles.
