Abstract We describe the endomorphisms of direct product two free groups finite rank and obtain conditions for which subgroup fixed points is finitely generated, we do same periodic points. also automorphisms such a group solve three Whitehead problems automorphisms, monomorphisms in this class. an endomorphism to be uniformly continuous when suitable metric considered study infinite extension ...

iron is a pro-oxidant cofactor that may be linked to atherosclerosis progression. free iron catalyzes the generation of free radicals and free radicals promote the oxidation of lipids. reduction of body iron stores secondary to blood donation has been hypothesized to reduce lipid peroxidation. the aim of this study was to evaluate the association between blood donation and antioxidant enzymes a...