29761
Mitochondria in the steroidogenic cells of the adrenal , gonad , placenta and brain contain the cholesterol side - chain cleavage enzyme , P450scc , and its two electron - transfer partners , ferredoxin reductase and ferredoxin .
 Chemical: cholesterol
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: cholesterol 
Answer:
 Chemical: cholesterol