Movie S3.

Tomographic reconstruction of a tubulosaccular complex (limiting membranes in various colors and intraluminal fibrillary content in gold) and its associated organelles, including free vesicles and tubules (in magenta), a-type pigment organelles (limiting membrane in green and intraluminal fibrillary content in gold) and an endosome (limiting membrane in purple and intraluminal vesicles in blue).