8500
Sibling aggregation of low - and high - density lipoprotein cholesterol and apolipoproteins B and A - I levels in black and white children : the Bogalusa Heart Study .
 low - and high - density lipoprotein cholesterol, apolipoproteins B and A - I
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 low - and high - density lipoprotein cholesterol, apolipoproteins B and A - I