| Binding studies demonstrate that coilin ( a Cajal body protein ) directly interacts with PIASy ( a PML body protein ) . 0.88648166^^^ Cell biological experiments using coilin and PIASy knockout cell lines demonstrate that interactions between coilin and PIASy account in part for the observed association of Cajal bodies with PML bodies . 0.68497789^^^ Interactions between coilin and PIASy partially link Cajal bodies to PML bodies . 0.56589214^^^ |