New yellow colored tennis ball placed next to racket(racquet) on synthetic(hard) tennis court surface with copy space for text on the left Pictureby smarnad1/114
Neoprene (polychloroprene) synthetic rubber, chemical structure. Atoms are represented as spheres with conventional color coding: hydrogen (white), carbon (grey), chlorine (green) Picturesby molekuul2/106
hair extensions of three colors on a white background. copyspace selective focus Stock Imageby licsiren3/9
3d structure of Ganetespib, a synthetic small-molecule inhibitor of heat shock protein 90 (Hsp90) with potential antineoplastic activity. Pictureby ibreakstock1/8