22718
On Flash electroretinograms ( ERG ) performed in scotopic conditions , similar and progressive ( time - dependent ) delayed onset and decreased amplitudes of oscillatory potentials ( from Day 71 ) and b - waves ( on Day 92 ) were identified in both BN and SD rats .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None