© Denis FALCONET / LPCV / CNRS Images
Chloroplasts decorating cells in thale cress (arabidopisis thaliana), observed using confocal microscopy. Chloroplasts are where photosynthesis takes place. In a cell, chloroplasts appear green, but they also emit (by fluorescence) light in the red part of the spectrum. Here, scientists are studying the division of these cell organelles, which are found only in plants.