... extractedfrom parotid, submaxillary gland, salivary glands, trachea,stomach, liver and gallbladder, duodenum and intestine and kidney by using guanidine hydrochloride as previouslydescribed [13].RT-PCR ... followed by aSer/Thr-rich region coded by exons 2–8 , followed by acysteine-rich region of 139 amino acids (Cys ¼ 7.2%)coded by exons 9–1 1, a second Ser/Thr-rich region of374 amino acids coded by ... coded by exons 1 1–1 5 and a Nido domain coded byexons 5–1 0 (Figs 1B and 4). A third EGF-like motif hasbeen identified previously in human MUC4 [29] encoded bya single exon (exon 19).SMARTanalysis...