Figure 1
From: Sulfate assimilation in eukaryotes: fusions, relocations and lateral transfers
TEM micrographs of immunogold labeling of C. reinhardtii using antisera against APR (1:2500) (A and B) and SiR (1:500) (C and D). Panels A and C show whole cells where the gold particles are almost exclusively in the plastid, particularly on the starch sheath surrounding the pyrenoid. Panels B and D show the pyrenoid and surrounding starch sheath, the gold can be seen in an almost continuous ring over the sheath.