Fig. 5

The expression of mitochondrial respiratory complexes and phagocytic ability of RAW 264.7 after exposure to 5 nm and 50 nm BPEI- and tannic acid-AuNPs for 24 h. A Representative lanes of mitochondrial respiratory chain complex II–V (n = 3 blots in total) using western blot. B The semi-quantitative results of mitochondrial respiratory chain complexes expression (n = 3) by gray scanning. *p < 0.05, **p < 0.01, compared with control