2290
While 1 , 25 ( OH ) ( 2 ) D increased by 75 % ( 49 . 9 pg / mL to 64 . 4 pg / mL , p < 0 . 001 ) then both level decreased after 4 weeks of withdrawal .
 Chemical: 1 , 25 ( OH ) ( 2 ) D
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: 1 , 25 ( OH ) ( 2 ) D