Microbe Cross-linking Adapter of membrane proteins Ig by antigen Tyrosine ITAM phosphorylation ⊙ ⊙ events ( BIk (BIk LynFyn PLCy GTP/GDP exchange activation on Ras. Rac Biochemical intermediates nositol trisphosphate司 increased cytosolic Ca2+Diacylglycerol ( DAG)RasGTP, RacGTP Active Ca2+-dependent enzymes PKC ERK JNK enzymes Transcription factors NFA NF-KDownloaded from: StudentConsult (on 1 June 2006 03:50 PM) © 2005 Elsevier