10118
Cystatin C was first described as ' gamma-trace ' in 1961 as a trace protein together with other ones ( such as beta-trace ) in the cerebrospinal fluid and in the urine of people with kidney failure .
 kidney failure
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 kidney failure