Filament with akinete and heterocyst - highly magnified

Description:

Longitude (deg): -2.8. Latitude (deg): 52.7. Longitude (deg/min): 2° 50' W. Latitude (deg/min): 52° 40' N. Vice county name: Shrops. Vice county no.: 40. Country: England. Identified by: Malcolm Storey. Comment: "among Anabaena scraped from lower surface of Frogbit leaf, in artificial pond at Field Centre". Category: microscope photograph. Image scaling: highly magnified. Where photo was taken: Microscope preparation. Photographic equipment used: Canon EOS1000D dSLR and Meiji microscope with x2.5 projection eye-piece. .