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We found positive Bcl - xL , Bax , and p53 immunostaining in 44 . 6 % , 28 . 6 % , and 58 . 9 % of the studied primary tumors and in 63 . 6 % , 45 . 5 % , and 72 . 7 % of lymph node metastases , respectively .
 primary tumors, lymph node metastases
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 primary tumors, lymph node metastases