21521
Localization of PTHrP and its functional receptor , PTH / PTHrP receptor 1 ( PTH1R ) , were analyzed in the untreated rat bladders and cultured bladder cells using real - time RT - PCR and immunoblotting , which revealed that PTH1R and PTHrP were more predominantly expressed in smooth muscle than in urothelium .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None