12048
OBJECTIVETo 1 ) determine if plasma 25 - hydroxyvitamin D ( 25 [ OH ] D ) concentrations differ among obese youth with normal glucose tolerance ( NGT ) versus prediabetes versus type 2 diabetes , and 2 ) assess the relationships between 25 ( OH ) D and in vivo insulin sensitivity and beta - cell function in this cohort . RESEARCH DESIGN AND METHODSPlasma 25 ( OH ) D concentrations were examined in banked specimens in 9 - to 20 - year - old obese youth ( n = 175 ; male 42 . 3 % , black 46 . 3 % ) ( NGT , n = 105 ; impaired glucose tolerance [ IGT ] , n = 43 ; type 2 diabetes , n = 27 ) who had in vivo insulin sensitivity and secretion measured by hyperinsulinemic - euglycemic and hyperglycemic clamp techniques and had an assessment of total body composition and abdominal adiposity . RESULTSThe mean age and BMI of the subjects were 14 . 3 +/- 2 . 1 years and 35 . 7 +/- 5 . 6 kg / m ( 2 ) , respectively .
 Chemical: 25 - hydroxyvitamin D; Chemical: 25 [ OH ] D; Chemical: glucose; Chemical: 25 ( OH ) D; Chemical: 25 ( OH ) D; Chemical: glucose
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: 25 - hydroxyvitamin D; Chemical: 25 [ OH ] D; Chemical: glucose; Chemical: 25 ( OH ) D; Chemical: 25 ( OH ) D; Chemical: glucose