Figure 3. Parotid and submandibular saliva were separated on 4-15% polyacrylamide gels, transferred to nitrocellulose, and immunoblotted with various mAbs. Parotid saliva, lanes 1, 3, and 5; submandibular saliva, lanes 2, 4, and 6. mAb 213-1 and mAb 213-6 were raised against lung gp-340; CpMG2 was raised against a MUC7 peptide. In contrast to mAb 213-6, mAb 213-1 showed cross-reactivity with MUC7.