Keywords
alpha helix, artwork, beta sheet, biochemical, biochemistry, biological, biology, black background, cd4, healthcare, illustration, immune system, immunological, immunology, medical, medical illustration, medicine, model, molecular, molecular model, molecular structure, molecule, no-one, nobody, protein, proteomics, research, strand, structure, t cell receptor, 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, u76377113