1786
To demonstrate the relationship between peripheral iron overload and dopaminergic neuron loss in rat substantia nigra ( SN ) , in the present study we used fast cyclic voltammetry , tyrosine hydroxylase ( TH ) immunohistochemistry , Perls ' iron staining , and high performance liquid chromatography - electrochemical detection to study the degeneration of dopaminergic neurons and increased iron content in the SN of iron dextran overloaded animals .
 Chemical: iron; Chemical: tyrosine; Chemical: iron; Disease: degeneration of dopaminergic neurons; Chemical: iron; Chemical: iron dextran
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: iron; Chemical: tyrosine; Chemical: iron; Disease: degeneration of dopaminergic neurons; Chemical: iron; Chemical: iron dextran