Fig. 7

Transmission electron micrograph of Pelomyxa schiedti, ultra-thin sections. a Nuclear area. N, nucleus; black arrow, putative mitochondrion-related organelle; white arrow, small dense body (putative peroxisome); asterisk (*), prokaryotic endosymbiont. b–d High magnification of putative mitochondrion-related organelle. Specimens were fixed with 0.1 M cacodylate (b, c) or PHEM buffer (d). Black arrow, bounding double membrane. e High magnification of small dense body (putative peroxisome). Scale bars, 400 nm for a and 50 nm for b–e