Hormonal and ultrasonographic characterization of the seasonal reproductive cycle of male and female .

Research concerning to characterize seasonal reproductive cycle in males and females of by ultrasound and hormonal measurement. Reproductive aspects (follicular and testicular cycles, and pregnancy) from 28 adult snakes (14 males and 14 females) during different months of the years were studied. Snakes housed individually in cages in an environment with controlled luminosity and humidity, and fed monthly.

A new fibrin sealant as a three-dimensional scaffold candidate for mesenchymal stem cells.

Introduction: The optimization of an organic scaffold for specific types of applications and cells is vital to successful tissue engineering. In this study, we investigated the effects of a new fibrin sealant derived from snake venom as a scaffold for mesenchymal stem cells, to demonstrate the ability of cells to affect and detect the biological microenvironment.

Methods: The characterization of CD34, CD44 and CD90 expression on mesenchymal stem cells was performed by flow cytometry.