Enhanced ultrastructural visualization of the horseradish peroxidase- tetramethylbenzidine reaction productMA Henry, LE Westrum and LR Johnson
Ultrastructural visualization of the horseradish peroxidase- tetramethylbenzidine (HRP-TMB) reaction product within trigeminal ganglion cells and brain stem axons and terminals following HRP injections into the pulpal chambers of cat teeth is enhanced by utilization of a modified osmication procedure that converts the reaction product to a markedly stable and electron-dense form. The results following the use of the modified osmication procedure (pH 5.0 phosphate buffer at 20 degrees C for 12 hours) are compared to results obtained by following Carson's osmication protocol (Carson KA, Mesulam M-M: J Histochem Cytochem 30:425, 1982; Carson KA, Mesulam M-M: In Tracing Neural Connections with Horseradish Peroxidase. Edited by M-M Mesulam. J Wiley, Chichester, England, 1982, p 153-184) (pH 6.0 phosphate buffer at 45 degrees C for 45 min). The results suggest that the conversion of the HRP-TMB reaction product to an electron-dense form during osmication is intimately associated with the pH of the phosphate buffer and the total time of osmication.
Volume 33,
Issue 12,
pp. 1256-1259,
12/01/1985
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V. G. J. M. VanderHorst and G. Holstege Estrogen Induces Axonal Outgrowth in the Nucleus Retroambiguus-Lumbosacral Motoneuronal Pathway in the Adult Female Cat J. Neurosci., February 1, 1997; 17(3): 1122 - 1136. [Abstract] [Full Text] [PDF] |
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