The Scanning electron micrographs of sorafenib entrapped sodium selenite nanoparticles using various techniques (A) Nanoparticles formulated by using 0.5% v/v of formaldehyde solution through chemical cross linking method, the figure shows the nanoparticle at 60,000 × magnification; (B) Nanoparticles formulated by using 0.5% w/v of magnesium sulfate through chemical cross linking method, the figure shows the nanoparticle at 30,000 × magnification; (C) Nanoparticles formulated by using 0.5% w/v of tripolyphosphate through chemical cross linking method, the figure shows the nanoparticle at 60,000 × magnification; (D) Nanoparticles formulated by using 0.5% w/v of dextran sulfate through chemical cross linking method, the figure shows the nanoparticle at 12,000 × magnification; (E) Nanoparticles formulated by using 0.5% w/v of Aluminium hydroxide through chemical cross linking method, the figure shows the nanoparticle at 60,000 × magnification; (F) Nanoparticles formulated by using 0.5% w/v of tripolyphosphate through solvent evaporation method, the figure shows the nanoparticle at 15,000 × magnification.