9599
Molecular modelling showed different binding sites for retinol and retinoic acid on alpha - and beta - caseins with more stable complexes formed with alpha - casein .
 Chemical: retinol; Chemical: retinoic acid
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: retinol; Chemical: retinoic acid