[Evaluation of osseointegration of domestic porous tantalum-niobium alloy].

Purpose: To evaluate the osseointegration of domestic porous tantalum-niobium(PTa-Nb) alloy.

Methods: A total of 36 adult New Zealand rabbits were selected and divided into 3 groups. Pta-Nb rods(3.

[Silica nanoparticles modified as carriers for gene transfection].

The silica nanoparticles are modified by sodium iodine or sodium chloride with different concentration. Their ability to bind and protect plasmid DNA was demonstrated by agarose gel electrophoresis. The EGFP-N1 plasmid was transfected into HT1080 by combing silica nanoparticle.