Figure 6From: Influence of external calcium and thapsigargin on the uptake of polystyrene beads by the macrophage-like cell lines U937 and MH-S The phagocytosis efficiency of U937 cells dependent on external calcium ion concentrations in HBSS buffer without thapsigargin (dark grey bars) and with 10 nM thapsigargin (light grey bars). Th: thapsigargin. Statistical significance is marked by asterisks.Back to article page