Cryodehydration protocol to obtain high-quality permanent anatomical material.

The study of anatomy is largely dependent on cadaveric specimens to fulfill the tridimensional comprehension of each structure as well as the relationship between organs. Given the difficult access to fresh anatomical specimens, the constant renovation of samples for research and educational purposes is unsustainable, beyond the ethical issues involved. The standard technique for preserving specimens involves fixation and later immersion in formaldehyde, which enables a good result, but also presents elevated carcinogenic potential.

Morphology and immunolocalization of aquaporins 1 and 9 in the agouti () testis excurrent ducts.

This study investigated the morphology and immunoexpression of aquaporins (AQPs) 1 and 9 in the rete testis, efferent ducts, epididymis, and vas deferens in the Azara's agouti (). For this purpose, ten adult sexually mature animals were used in histologic and immunohistochemical analyses. The Azara's agouti rete testis was labyrinthine and lined with simple cubic epithelium.

Fatty acid synthase and Ki-67 immunoexpression can be useful for the identification of malignant component in carcinoma ex-pleomorphic adenoma.

Background: Fatty acid synthase (FASN) is the key molecule for catalyzing fatty acid synthesis and have been associated with several malignant tumors.

Methods: We analyzed the expression of FASN and Ki-67, by immunohistochemistry on 29 carcinomas ex-pleomorphic adenoma (CXPAs) and 25 pleomorphic adenomas (PAs).

Results: Ki-67 proliferation index and FASN expression were significantly higher in patients with CXPA than patients with PA (P < 0.

High diagnostic accuracy and reproducibility of fine-needle aspiration cytology for diagnosing salivary gland tumors: cytohistologic correlation in 182 cases.

Objective: The purpose of this study was to assess the efficacy and reproducibility of the cytologic diagnosis of salivary gland tumors (SGTs) using fine-needle aspiration cytology (FNAC). The study aimed to determine diagnostic accuracy, sensitivity, and specificity and to evaluate the extent of interobserver agreement.

Study Design: We retrospectively evaluated SGTs from the files of the Division of Pathology at the Clinics Hospital of São Paulo and Piracicaba Dental School between 2000 and 2006.

Morphology of accessory genital glands of spotted paca (Agouti paca Linnaeus, 1766).

The spotted paca is the second largest rodent in Brazil, where it is of great economic interest in impoverished regions in view of its prominence as a low-cost source of protein. Little is known about the morphology of the accessory genital glands of this species. Thus, we studied the position and morphology of the genitals in ten adult male spotted pacas.

Conventional and modified veneered zirconia vs. metalloceramic: fatigue and finite element analysis.

Purpose: The purpose of this study was to test the hypothesis that all-ceramic crown core-veneer system reliability is improved by modifying the core design and as a result is comparable in reliability to metal-ceramic retainers (MCR). Finite element analysis (FEA) was performed to verify maximum principal stress distribution in the systems.

Materials And Methods: A first lower molar full crown preparation was modeled by reducing the height of proximal walls by 1.