Differential astroglial responses in the spinal cord of rats submitted to a sciatic nerve double crush treated with local injection of cultured Schwann cell suspension or lesioned spinal cord extract: implications on cell therapy for nerve repair - Dallo, JG; Reichert, BV; Valladao Junior, JB; Silva, C; Luca, BA; Levy Bde, F; Chadi, G (Act Cir Bras, 2007)