Chloroplast-Golgi link? Gary Patterson, College of the Marshall Islands 31 October 2011 Two thoughts occurred to me as I read this very interesting article. First, as I looked at Figure 3, the stacks of Golgi cisternae as depicted reminded me of the stack of thylakoids in chloroplasts. Knowing that there is redundacy in nature as well as the use of slightly tweaked versions of molecules from one system or process in another system or process, i.e. NADH and NADPH in respiration and photosynthesis, respectively; is it be possible that communication and/or transport between cisternae in Golgi is similar to that found in the grana stacks of chloroplasts? Second thought: Has the technology been developed to enable researchers to radioactively label, say a cell membrane protein, made in the ER and then follow it along its journey from the ER, through the Golgi to where its transported to the cell membrane? Competing interests None, just curiousity!