First use of HRP neuronal tracing?

Elizabeth Stepien estepien at
Mon Jul 3 19:53:16 EST 1995


Could someone please let me know who was the first person to use HRP for 
neuronal retrograde tracing.  I have a feeling it was the optic nerve but 
I am not sure.  Also if you know of any references reviewing the use of 
HRP in neuronal systems I'd greatly appreciate it.

email: estepien at

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