22420
Under in vitro growth conditions , the size of the cuf1 Delta cells is normal and the hypertrophy phenotype is readily induced in vitro under conditions of copper starvation .
 Chemical: copper
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: copper