Figure 8From: The role of TGF-β signaling and apoptosis in innate and adaptive immunity in zebrafish: a systems biology approach Protein interactions of caspase 2 in secondary infection. Caspase 2 was identified to be a hub protein during both primary and secondary infection. Bcl2, an anti-apoptotic protein, only interacted with Casp2 during secondary infection, suggesting that the apoptotic process is inhibited in secondary infection.Back to article page