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. Author manuscript; available in PMC: 2020 Aug 19.
Published in final edited form as: ACS Appl Bio Mater. 2019 Jul 4;2(8):3540–3550. doi: 10.1021/acsabm.9b00419

Figure 6.

Figure 6.

Alcian blue positive staining reveals mucinous goblet cells in the jejunum of rats administered with PLGA or PLGA–GA nanosystems orally at ~33 mg of particles (polymer)/rat daily for 10 days. The alcian blue staining in goblet cells is primarily due to mucin glycoprotein (MUC2). The staining is carried out at pH 2.5.