3198
Conventional LW rats , implanted with testosterone at age 4 months , developed a higher incidence of prostate cancer after an average interval of 14 months : 24 % had developed gross tumors , and 40 % when it included microscopic tumors .
 Chemical: testosterone; Disease: prostate cancer; Disease: tumors; Disease: tumors
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: testosterone; Disease: prostate cancer; Disease: tumors; Disease: tumors