4812
Expression of both receptors was studied in biopsy samples from 92 patients ( 6 males and 86 females ; age ranging from 28 to 86 years , mean 56 years ) .
 biopsy samples
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 biopsy samples