2572
To investigate the effects of isotretinoin on HDL , we measured HDL - C , HDL phospholipids ( HDL - PL ) , apoprotein A1 ( apo A - 1 ) , and HDL - C subfractions ( HDL2 - C and HDL3 - C ) in 24 healthy , male patients receiving a 16 - week course of isotretinoin ( 1 . 0 mg / kg / day ) for treatment of severe acne vulgaris .
 HDL, HDL - C, HDL, HDL - PL, apoprotein A1, apo A - 1, HDL - C, HDL2 - C, HDL3 - C
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 HDL, HDL - C, HDL, HDL - PL, apoprotein A1, apo A - 1, HDL - C, HDL2 - C, HDL3 - C