1679
It appears that progressive substitution of lysine for threonine at the 436 position results in lower circulating 25 - OHD .
 Chemical: lysine; Chemical: threonine; Chemical: 25 - OHD
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: lysine; Chemical: threonine; Chemical: 25 - OHD