25002
Data from 490 adult renal - transplant recipients , representative of the general population of adult renal - transplant patients ( i . e . including patients considered at low immunological risk - enrolled in the OPERA trial as well as second renal transplant and patients co - treated by either cyclosporine or tacrolimus ) , were analyzed .
 cyclosporine, tacrolimus
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 cyclosporine, tacrolimus