Simple vector graphic of an NMR tube nmr nuclear magnetic resonance spectroscopy chemistry Empy NMR Tube
Bacterial operon model. More information here http://en.wikipedia.org/wiki/Operon bacteria operon gene Operon model (Molecular Biology)
Vector image of a Shigemi tube nmr nuclear magnetic resonance spectroscopy chemistry Shigemi NMR tube
A vaccuum-style blood tube, with label. Created using inkscape v0.45 blood tube container Blood tube (vaccuum style)
Simple vector graphic of an NMR tube with liquid in it. nmr nuclear magnetic resonance spectroscopy chemistry Filled NMR Tube