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Cari koleksi dengan cepat sesuai kebutuhan Anda.Hypotheses of origins and evolution of neurons and synapses are controversial, mostly due to limited comparative data. Here, we investigated the genome-wide distribution of the bilaterian ‘‘synaptic’’ and ‘‘neuronal’’ proteincoding genes in non-bilaterian basal metazoans (Ctenophora, Porifera, Placozoa, and Cnidaria). First, there are no recognized genes uniquely expressed in ne…