![Figure 6. Hematoxylin and eosin stain of the microsphere injection site in sheep intercostal muscle. A-C show histology from intercostal injections with bupivacaine microspheres on day 0 (A) 100x, day 2 (B) 200x, and day 4 (C) 100x, respectively. D-F show intercostal muscle histology after injections with bupivacaine-dexamethasone microspheres on day 0 (D) 200x, day 2 (E) 200x, and day 4 (F) 200x. CT = connective tissue; E = edema; M = muscle; MS = microspheres;[arrow right]= polymorphonuclear leukocytes.](https://asa2.silverchair-cdn.com/asa2/content_public/journal/anesthesiology/89/4/10.1097_00000542-199810000-00022/2/22ff6.jpeg?Expires=1716510701&Signature=l2nburu9hn7vl3pSO7DS0SPfM~80SxRwB2XRFfmIxO2VqgQpj5cJGXGbGyJd7GGxkHE-D7Kl9IESvA-2M4FtYuxamnYTWZ~eMt4AuCkGedAZLzf6LOScH5rtBr0O4JhjapRQhLySUsZp7XhHtibersAswoUsdxKslqphq3c7YIoMXVfs6rh85lh5AN-3IE-2LEg3EctQGa99qymMXnE0qMl71fbkqlzOd6LVIuvrHuCT~AG-Oscl-6myIGeR98G24kGXQdbwaKOn4~j71Z6r84Tk4T9TrVRVPtaHTqFE0AkiExRSR9IKhBxNOpgbOjev7eAgSRW841THOQtlzDBf-g__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Figure 6. Hematoxylin and eosin stain of the microsphere injection site in sheep intercostal muscle. A-C show histology from intercostal injections with bupivacaine microspheres on day 0 (A) 100x, day 2 (B) 200x, and day 4 (C) 100x, respectively. D-F show intercostal muscle histology after injections with bupivacaine-dexamethasone microspheres on day 0 (D) 200x, day 2 (E) 200x, and day 4 (F) 200x. CT = connective tissue; E = edema; M = muscle; MS = microspheres;[arrow right]= polymorphonuclear leukocytes.
