Correction: Quantifying exosome secretion from single cells reveals a modulatory role for GPCR signaling

Vol. 217, No. 3, March 5, 2018. [10.1083/jcb.201703206][1]. The first version of this article published online included errors in Figure 4 that occurred during production. The graph in [Fig. 4 H][2] was inadvertently duplicated in [Fig. 4 D][2]. ![Figure 4.][3] Figure 4. GPCR activation