Figure 4From: Global gene expression profiling in human lung cells exposed to cobaltTIMP2 ELISA. Concentrations of TIMP2 in supernatants were determined by ELISA following treatment of A549 cells with cobalt over 24 h. The changes in level of TIMP2 in cell supernatants between cobalt and the control were -5% for 0.2 mM, -57% for 1 mM and -72% for 2 mM (n = 2).Back to article page