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The problem of the direct retinohypothalamic projection in mammals (Moore, 1973) was reinvestigated in the laboratory mouse by electron microscopy and cobalt chloride-iontophoresis. The time-course of the axonal degeneration in the suprachiasmatic nucleus was studied 3, 6 and 12 h, 1, 2, 4, 6, 9 and 12 days after unilateral retinectomy. Specificity of the(More)
Six days after bilateral experimental ablation of the rat retina the nuclear diameter of the suprachiasmatic neurons decreased by 10.3% (Wenisch und Hartwig 1973). From these results it has been postulated that a direct retinohypothalamic connection exists between the eye and the suprachiasmatic nuclei. When unilateral retinal ablation was performed, a(More)
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