Algal ponds growing blue-green algae,Spirulina sp.,near Bangphok,Thailand. The algae are grown on a small scale and harvested using a simple sieve system (background) to drain off the water. They are used for producing food dyes or dried and used as a protein-rich health food. Pigments exctracted from Spirulina are also used as a stain in immunology | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / PROF. DAVID HALL |
Taille de l’image : | 4742 px × 3067 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |