Pretreatment with H(2) O(2) alleviates aluminum-induced oxidative stress in wheat seedlings.

Hydrogen peroxide (H(2) O(2) ) is a key reactive oxygen species (ROS) in signal transduction pathways leading to activation of plant defenses against biotic and abiotic stresses. In this study, we investigated the effects of H(2) O(2) pretreatment on aluminum (Al) induced antioxidant responses in root tips of two wheat (Triticum aestivum L.) genotypes, Yangmai-5 (Al-sensitive) and Jian-864 (Al-tolerant).

[The clinical report of 21 cases of occlusion of atrial septal defect through right chest small incision].

Objective: To evaluate the methods and efficacy of atrial septal defect (ASD) occlusion through right chest incision.

Methods: The clinical data of 21 patients with ASD from July 2004 to May 2005 were analyzed retrospectively. Eight patients were male and 13 patients were female, aged from 1 to 70 years old, with the median age of 21 years old.