9595
The binding sites of retinol and retinoic acid with milk alpha - and beta - caseins were determined , using constant protein concentration and various retinoid contents .
 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