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The effect of calcitonin , a large amount of calcium given orally , pentagastrin and glucagon on plasma 47Ca radioactivity curves in subjects pretreated with 47Ca was examined .
 calcitonin, glucagon
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 calcitonin, glucagon