Rohon-Beard cells in frog development: a study of temporal and spatial changes in a transient cell population

The Journal of Comparative Neurology
V B Eichler, R A Porter

Abstract

The spatial distribution and temporal disappearance of Rohon-Beard cells in the spinal cords of larval and newly metamorphosed Rana pipiens were studied histologically to provide a basis for further research dealing with this particular cell type. It was found that a maximum number of approximately 250 Rohon-Beard neurons have differentiated within the spinal cord of Rana pipiens by larval stage I. The majority of these cells are located in the cephalic end of the spinal cord, with a large number found near the boundary of the anterior quarter and the second quarter of the spinal cord. Fewer cells are found in the third and fourth quarters. There is a gradual degeneration of these cells during larval life so that by stage XXV, which is the completion of the metamorphic climax, there are no normally appearing Rohon-Beard cells present. Degeneration of the Rohon-Beard cells does not progress cephalocaudally with development, but rather there appears to be a nearly equal proportional loss of Rohon-Beard cells in each quarter of the spinal cord at each of the stages studied. All Rohon-Beard cells present during larval development of Rana pipiens are located in a dorsal position close to the midline. At all ages and in each quarter ...Continue Reading

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Citations

Dec 11, 2008·Neurochemical Research·Jyotshnabala KanungoHarish C Pant
Jan 1, 2009·Integrative Cancer Therapies·Ralph W Moss
Dec 31, 2003·Developmental Dynamics : an Official Publication of the American Association of Anatomists·Rosario ReyesJudith S Eisen
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Oct 1, 1987·The Journal of Comparative Neurology·J E Lamborghini
May 31, 2020·Developmental Biology·Kristina Williams, Angeles B Ribera

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