Figure 3

Relaxation of ingested magnetic particles (A, relative decay after 5 min, b5, normalized to control probes without particles) and mechanical integrity (B, stiffness, mean between low and high stress) of J774A.1 macrophages after 4 h incubation with different types of 100 μ g ultrafine particles/ml/million cells under different incubation conditions, such as without serum (w/o FCS), 100 μ M Verapamil, 20 μ M BAPTA-AM or 25 μ M W-7 (normalized values +/- SD; N = 5; **: p < 0.01, *: p < 0.05).