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Instead, they form tight complexes with two different classes of abundant cytosolic receptors called immunophilins upon entering the cell, and consequently inhibit their peptidyl prolyl cis-trans isomerase activities .
 peptidyl prolyl cis-trans isomerase, cytosolic receptors, immunophilins
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 peptidyl prolyl cis-trans isomerase, cytosolic receptors, immunophilins