Counting cells. Argon laser (centre) being used to count and sort a stream of cells. This is a laser- feedback controlled system. The counting of cells is called cytometry. Flow cytometry characterizes single cells as they pass at high speed through a laser beam. Speeds of up to 50,000 cells a second can be measured. The scattering of the laser beam provides a way to identify the cells. Many other characteristics,such as shape and surface texture can also be measured. The cells are then sorted as electrically-charged droplets. This also purifies the samples. Photographed in a Celltech research laboratory,UK | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / King-Holmes, James / Celltech R&D |
Taille de l’image : | 3448 px × 5078 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |