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  • Title: Origin of luteinizing hormone-releasing hormone (LHRH) neurons in the chick embryo: effect of the olfactory placode ablation.
    Author: Akutsu S, Takada M, Ohki-Hamazaki H, Murakami S, Arai Y.
    Journal: Neurosci Lett; 1992 Aug 17; 142(2):241-4. PubMed ID: 1454222.
    Abstract:
    A unilateral olfactory placodectomy resulted in the absence of luteinizing hormone-releasing hormone-immunoreactive (LHRH-ir) cells in the olfactory-forebrain axis of the operated side, whereas the development of the LHRH neuronal system was not disturbed on the unoperated side. In the embryos in which a fragment of the medial olfactory epithelium was spared the damage, a small number of LHRH-ir cells were detected in the nasal region of the operated side, where the lack of the central projection of the olfactory nerve caused stagnation of LHRH-ir cells, no ir-cells being found in the brain area. These results suggest that LHRH neurons originate in the olfactory placode and then migrate into the forebrain along the olfactory nerve.
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