9596
FTIR , UV - visible and fluorescence spectroscopic methods as well as molecular modelling were used to analyse retinol and retinoic acid binding sites , the binding constant and the effect of retinoid complexation on the stability and conformation of caseins .
 Chemical: retinol; Chemical: retinoic acid; Chemical: retinoid
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; Chemical: retinoid