In Vitro Cytotoxicity and Antitumor Activity of Dual-Targeting Drug Delivery System Based on Modified Magnetic Carbon by Folate

Figure 8

Optical micrographs of HeLa cells incubated with free DOX for 6 h (a) and 12 h (b), with MTDDS@DOX for 6 h (c) and 12 h (d), and with DTDDS@DOX for 6 h (e) and 12 h (f).

(a)

(b)

(c)

(d)

(e)

(f)