24583
In addition , changes in salivary 99m Tc pertechnetate uptake and excretion were observed by single - photon emission computed tomography ( SPECT ) .
 Chemical: 99m Tc pertechnetate
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: 99m Tc pertechnetate