A C. elegans adult and a polarized embryo express the polarity proteins PAR-2 (green) and PAR-6 (red). Goehring et al. analyze the dynamics of these two proteins as they diffuse between opposing membrane domains and exchange with cytoplasmic pools.
Image courtesy of Nathan Goehring.
Reference: Goehring et al. (2011) J. Cell Biol. 193, 583-594.