||Liarzi O, Epel BL. Development of a quantitative tool for measuring changes in the coefficient of conductivity of plasmodesmata induced by developmental, biotic, and abiotic signals. Protoplasma. 2005 Apr225(1-2):67-76PubMed ID15868214
||Terry BR, Robards AW (1987) Hydrodynamic radius alone governs the mobility of molecules through plasmodesmata. Planta 171: 145–157
||GFP has properties that make it an excellent probe: it does not significantly interact with cellular components (Swaminathan et al. 1997, Verkman 2002) and its intracellular rate of diffusion is rapid (seconds).