2358
In addition , genes encoding tumor necrosis factor ( TNF ) , TNF receptor 2 ( TNFR2 ) , and the signaling proteins stress - activated protein kinase ( SAPK ) / Jun NH ( 2 ) - terminal kinase ( JNK ) , were downregulated , and phosphorylated levels of SAPK / JNK / c - Jun were decreased in Retn ( - / - ) mice .
 Chemical: NH ( 2 )
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: NH ( 2 )