ECB-ART-52257
Dev Growth Differ
1986 Nov 01;286:569-574. doi: 10.1111/j.1440-169X.1986.00569.x.
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Development of Serotonergic Neurons in Embryos of the Sea Urchin, Strongylocentrotus purpuratus: (serotonergic/neural development/embryo/echinoid).
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The development of the serotonergic component of the nervous system of larvae of S. purpuratus is traced using indirect immunofluorescence with a polyclonal antibody against the neurotransmitter serotonin. Initially one or two neuroblasts can be detected in the thickened epithelium of the animal plate of late gastrulae (56 hr). The number of immunoreactive cells increases to about eight during formation of the pluteus (85-90 hr). Immunoreactive axons appear simultaneously from all neuroblasts present in the 79 hr prism stage larva and form the apical ganglion. It is proposed that this component of the larval nervous system is derived from a small number of ectodermal cells associated with the apical tuft.
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