| 摘要 |
<p>A test tube (4) for sedimentation by density gradient and swim-up techniques provided in combination with: a fixed small probe (14) extending along the inner wall of the test tube (4) up to near the bottom (6) of the same in order to allow the sedimentation medium to be either deposited or sucked without causing any contamination or mixing of the deposited layers by a Pasteur pipette and/or a syringe or the like connected or not to another small probe of lower diameter; a spiral protrusion (20) on the inner wall of the test tube (4) which allows said Pasteur pipette or a syringe to be firmly supported at the desired height without causing a strong liquid flow.</p> |
