2846
The measurement of the absorbance at 446 and 502 nm of different beta - carotene and lycopene standard mixtures was used to optimize a neural network based on a multilayer perceptron ( MLP ) ( learning and verification process ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
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