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![Clumps of cyanobacteria in the genus Nostoc in southeastern US](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1641629671141-DSSMUWFW114CGWIO87P9/IMG_2820.jpeg)
![Dark colored cyanobacteria also called blue green algae](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1641629575163-2X4PYSRUXUJ702FPEMK7/IMG_2762.jpeg)
![Jelly like cyanobacteria (Nostoc) after absorbing water](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1640834857519-P0011ZJDSUNUR48IHSEA/IMG_0087.jpeg)
![Cyanobacteria (Nostoc) gelatinous colony at 100x](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1640756906003-90MD6CQPCADN44QT6LCW/IMG_9465.jpeg)
![Cyanobacteria colony showing chains of cells at 100x](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1640756907697-1JOS0LU151ZWJR83IDEN/IMG_9464.jpeg)
![Nostoc at 400x](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1641442013278-LP69BM10EU7V2JUQNNKB/IMG_2804.jpeg)
![Cyanobacteria cellular chains with large heterocyst cells in the center at 400x](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1640756908786-5JDIBG8FOZBCA1X800Q1/IMG_9467.jpeg)
![Cyanobacteria heterocyst cell (larger) in the center of chain with vegetive cells on either side at 400x](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1640756897603-CUASUJTZUWKE5KA7GDYP/IMG_9463.jpeg)
![PART II](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1641442217457-BWGDBGAVLTRA72XSDF3Z/IMG_9463.jpeg)
![A species of filamentous cyanobacteria living ot top of a leafy liverwort at 20x](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1642386066871-KVI0JZ6HMAEQZW71UIJN/IMG_4516.jpeg)
![Cyanobacteria in a symbiotic relationship with a liverwort at 100x](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1642386065102-F8GQ5ITJZ4WKG2R1DM89/IMG_4519.jpeg)
![Square shaped heterocyst cell at 400x](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1642307155542-KC81D0BNIMBNM8P7QP7X/IMG_4583.jpeg)
![Anabaena with heterocyst and akinete cells at 400x](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1656076886908-GIJJL299T1W7BU2721ZX/IMG_2794.jpeg)
![IMG_2792.jpeg](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1656076885908-USI109S8IKPC7QTCAUA0/IMG_2792.jpeg)
![Heterocyst cell in between two larger akinete cells at 400x](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1656076884774-7M9RS8KK8TOEHQ896LQD/IMG_2794.jpeg)
![Cycad plant (Cycas revoluta)](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1720020349729-8A10M0DNQ10P68BNK3KU/IMG_6499.jpeg)
![Coralloid roots of a cycad plant containing symbiotic cyanobacteria](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1720020354935-52N9Y6AXZTA8YDUOJB21/IMG_6500.jpeg)
![Sliced coralloid root showing green ring of symbiotic cyanobacteria at 10x](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1720020357393-DXTKY3DCQJQ46QHPRO8J/IMG_6502.jpeg)
![IMG_6502.jpeg](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1720020345172-GJCKVVWWZZR4L800TO5V/IMG_6502.jpeg)
![Cross section of Coralloid root at 40x](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1720143799598-QSZXQNIK3W90D2CIKA2H/IMG_5274.jpeg)
![100x](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1720143804514-JV44AS7NIME6RN44AIQW/IMG_5275.jpeg)
![Root tissue containing clumps of cyanobacteria at 400x](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1720143807226-DMUW4KCEY4SMUHZSJMRY/IMG_5281.jpeg)
![IMG_5280.jpeg](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1720143805798-0CZ1BIFKQE0K4TU5TPEF/IMG_5280.jpeg)
![Cyanobacteria cells at 400x](https://images.squarespace-cdn.com/content/v1/57b4355cbe65942bdfc8d605/1720143800792-ULADKMDWRH6ZHSL2KOUY/IMG_5276.jpeg)