Identify the correct comparisons between activation of the transcription factor NF kappa B by toll-like receptors (TLR) and NOD proteins in mucosal epithelial cells. Select all that apply.
1) Both TLR and NOD proteins activate NF kappa B in mucosal epithelial cells
2) Only TLR activates NF kappa B in mucosal epithelial cells
3) Only NOD proteins activate NF kappa B in mucosal epithelial cells
4) Neither TLR nor NOD proteins activate NF kappa B in mucosal epithelial cells
