<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Hernandez-Nicaise, Mari-Luz</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The nervous system of ctenophores III. Ultrastructure of synapses</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Neurocytology</style></secondary-title><short-title><style face="normal" font="default" size="100%">J Neurocytol</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">1973</style></year><pub-dates><date><style  face="normal" font="default" size="100%">9/1973</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">3</style></number><volume><style face="normal" font="default" size="100%">2</style></volume><pages><style face="normal" font="default" size="100%">249 - 263</style></pages><abstract><style face="normal" font="default" size="100%">The ultrastructure of synapses from the nervous systems of seven species of ctenophores has been studied. All synaptic contacts so far observed show a peculiar organization characteristic of this phylum: the pre-synaptic neurite contains in sequence from the plasma membrane: a row of vesicles lining the synaptic membrane, a sac of endoplasmic reticulum which is connected with the rough reticulum of the neuron, and one or several mitochondria. The arrangement of these closely associated organelles is constant, forming a complex referred to as thepre-synaptic triad. The pre-synaptic triad is found both in interneural synapses—which may be polarized, symmetrical or reciprocal — and in various neuro-receptor and neuro-effector junctions. The possible functional implications of these features are discussed.</style></abstract><issue><style face="normal" font="default" size="100%">3</style></issue></record></records></xml>