Table 2. The ^99mTc-K237/FA-PEG-PLGA (LA/GA = 60/40) NPs binding rate (%) of SKOV-3 cells.

Number of SKOV-3 cells	99mTcO4–	LA/GA = 60/40
		Total binding	Non-specific binding	Specific binding
5 × 106	2.59 ± 0.47	36.14 ± 1.0	3.86 ± 0.13	32.28
1 × 106	2.30 ± 0.21	33.41 ± 0.18	3.57 ± 0.1	29.84
1 × 105	1.89 ± 0.53	30.48 ± 1.10	2.52 ± 0.32	27.96
5 × 104	1.58 ± 0.55	25.89 ± 1.70	1.69 ± 0.06	24.2
1 × 104	1.62 ± 0.71	21.37 ± 1.50	1.74 ± 0.88	19.63