15889
The objective of the present study is to determine whether di ( 2 - ethylhexyl ) phthalate ( DEHP ) exposure at adulthood increases rat Leydig cell number and to investigate the possible mechanism .
 di ( 2 - ethylhexyl ) phthalate, DEHP
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 di ( 2 - ethylhexyl ) phthalate, DEHP