Figure 10From: The nervous system of Isodiametra pulchra (Acoela) with a discussion on the neuroanatomy of the Xenacoelomorpha and its evolutionary implicationsElectron micrographs of horizontal sections through the brain of an adult specimen. Arrowheads point to synapses. A, B. Area of neuropil showing various vesicles and synapses. C. Synapses. Abbreviations: dv dense vesicles; llv large lucent vesicles; mi mitochondrion; slv small lucent vesicles. Scale bars: A, B, C 500 nm.Back to article page