tokens: SAPK / JNK activation was completely abolished in the absence of MKK7 , even though expression of MKK4 was strongly upregulated in mkk7 (-/- ) mast cell lines , and phosphorylation of MKK4 occurred normally in response to multiple stress stimuli .
folded_tokens: sapk / jnk activation be completely abolish in the absence of mkk7 , even though expression of mkk4 be strongly upregulate in mkk7 (-/- ) mast cell line , and phosphorylation of mkk4 occur normally in response to multiple stress stimulus .