Controlled Release of Ropivacaine from Single-Armed (1-PCL) and Four-Armed PCL (4-PCL) Microspheres

<div>SEM images of Ropi-loaded 1-PCL spheres (a), Ropi-loaded 4-PCL spheres (b), 1-PCL spheres after release assay for 58 h (c), and 4-PCL spheres after release assay for 58 h (d). 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International Journal of Polymer Science

fig5

Figure 5

Figure 5: Controlled Release of Ropivacaine from Single-Armed (1-PCL) and Four-Armed PCL (4-PCL) Microspheres 