11486
Because the high - density lipoprotein receptor ( HDL - R ) is a key element in cholesterol homeostasis and a potential therapeutic target for hypercholesterolemic drugs , an understanding of HDL - R regulation is essential .
 GENE: high - density lipoprotein receptor; GENE: HDL - R; GENE: HDL - R
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: high - density lipoprotein receptor, HDL - R, HDL - R 
Answer:
 GENE: high - density lipoprotein receptor; GENE: HDL - R; GENE: HDL - R