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Parathyroid hormone regulation of bone sialoprotein ( BSP ) gene transcription is mediated through a pituitary - specific transcription factor - 1 ( Pit - 1 ) motif in the rat BSP gene promoter .
 Parathyroid hormone, bone sialoprotein, BSP, pituitary - specific transcription factor - 1, Pit - 1, rat BSP gene promoter
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 Parathyroid hormone, bone sialoprotein, BSP, pituitary - specific transcription factor - 1, Pit - 1, rat BSP gene promoter