Keywords
alpha helix, artwork, beta sheet, biochemical, biochemistry, biological, biology, black background, dna, genetics, healthcare, illustration, medical, medical illustration, medicine, model, molecular, molecular model, molecular structure, molecule, neural, no-one, nobody, plexin, plexin-a4, plxna4, protein, proteomics, research, signal transduction protein, strand, structure, tertiary structure, stock illustration, royalty free illustrations, stock clip art icon, stock clipart icons, logo, line art, EPS picture, pictures, graphic, graphics, drawing, drawings, vector image, artwork, EPS vector arts, fine art prints, print, poster, posters, mural, wall murals, u39941380