The comparative structure and expression of salivary components and vesicular transport proteins in the canine major salivary glands were investigated. Histochemical analysis revealed that the morphology of the five major salivary glands-parotid, submandibular, polystomatic sublingual, monostomatic sublingual, and zygomatic glands-was greatly diverse. Immunoblot analysis revealed that expression levels of α-amylase and antimicrobial proteins, such as lysozyme, lactoperoxidase, and lactoferrin, differed among the different glands. Similarly, Rab proteins (Rab3d, Rab11a, Rab11b, Rab27a, and Rab27b) and soluble N-ethylmaleimide-sensitive fusion protein attachment protein receptor (SNARE) proteins VAMP4, VAMP8, syntaxin-2, syntaxin-3, syntaxin-4, and syntaxin-6 were expressed at various levels in individual glands. mmunohistochemistry of Rab3d, Rab11b, Rab27b, VAMP4, VAMP8, syntaxin-4, and syntaxin-6 revealed their predominant expression in serous acinar cells, demilunes, and ductal cells. The VAMP4/syntaxin-6 SNARE complex, which is thought to be involved in the maturation of secretory granules in the Golgi field, was found more predominantly in the monostomatic sublingual gland than in the parotid gland. These results suggest that protein expression profiles in canine salivary glands differ among individual glands and reflect the properties of their specialized functions.

Abstract:The purpose of this study is to compare the tensile strength of Ni-Cr base metal presoldered joints, soldered by focused energy of infra-red (Infra-red soldering) with torch soldering technique.The results indicate the following.1. The tensile strength of presoldered joints, soldered by Infra-red soldering isstatistically stronger than presoldered joints, soldered by torch soldering (a =0.01).2. In case of torch soldering joints, porosities appeared to have a greater tendency than Infra-red soldering joints. Torch soldering joints porosities are seven times as many as the other.3. Correct tensile strength (Maximum Load: Kg/Sectional area of specimen-Porosityarea: mm2) of presoldered joints, soldered by both method are similar.It means that, tensile strength is correlate closely with certainly soldering area.

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