Ropivacaine-Loaded Poloxamer Binary Hydrogels for Prolonged Regional Anesthesia: Structural Aspects, Biocompatibility, and Pharmacological Evaluation

Figure 1

Scanning electron microscopy obtained for RVC (a), PL338 (b), PL407(20) (c), PL 407(20)-RVC (d), PL407(25) (e), PL 407(25)-RVC (f), PL 407(30) (g), PL407(30)-RVC (h), PL407/338(25 : 5) (i), PL407/338(25 : 5)-RVC (j), PL407/338(20/10) (k), and PL407/338(20/10)-RVC (l).

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)

(k)

(l)