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Flow cytometry study. ASGPR-positive cells HepG2 (B) and SMMC7721 (C), and ASGPR-negative cells NIH 3T3 (A) incubated with blank medium (control), Lac-MSNs, MSNs, and excess free lactose with Lac-MSNs for 4 h at 37°C. Data represent mean ± SD (n = 3).
