Ennio Pannese

The earliest mention of a cell sheath enveloping the body of the neurons in sensory ganglia is probably the following description by Valentin: "Sowohl die Kugeln der Be­ legungsformation 1 , als die Primitivfasem, werden von eigenthi. Meer

The present review is based on the data of the literature, and on the personal experience gained by the author in recent years by studying the histogenesis of spinal ganglia. Meer

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