2439
It is suggested that the mechanism of intestinal absorption of vitamin D and 25 - hydroxy - vitamin D may differ in man , the absorption of 25 - hydroxy - vitamin D possibly being less dependent on bile acids .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None