Fig. 2. P. tricornutum expressing GFP. Light microscopical images of cells
are shown on the left while their corresponding fluorescence images (GFP) are
presented on the right (excitation with UV light). (A) Cytosolic expression of
GFP without a targeting sequence. (B) GFP targeted to the ER (BiPGFP
construct). (C) GFP targeted to the plastids (AtpC1GFP construct). Bars, 2
µm.