Cytoplasm of a green Trichodina that lives on the surface of a freshwater snail collected in central Illinois. In this view the abundant endosymbiotic zoochlorellae and a single endosymbiotic bacteriu...

Cytoplasm of a green Trichodina that lives on the surface of a freshwater snail collected in central Illinois. In this view the abundant endosymbiotic zoochlorellae and a single endosymbiotic bacteriu...

A view of the endosymbiotic Chlorella of a green Trichodina that lives on the surface of a freshwater snail collected in central Illinois. In this image there is also an endosymbiotic bacterium. It ha...

An electron micrograph showing a portion of the single chloroplast of the unicellular green alga Chlamydomonas, an organism extensively used in the Siekvevitz/Palade laboratories at the Rockefeller t...

Transmission EM of cotyledon of the double knockout oep16.1/16.4 of Arabidopsis thaliana grown in the dark and grown under a normal day/night light regime. Characteristic wildtype thylakoids are seen....

Transmission EM of cotyledons of wildtype Arabidopsis thaliana grown under a normal day/night light regime show the typical chloroplasts with thylakoid membranes organized as stacked grana and non-sta...

Transmission EM of cotyledons of the double knockout oep16.1/16.4 of Arabidopsis thaliana grown in the dark and then exposed to light for 16 hr. The development of characteristic wildtype thylakoids ...