These algae were thought to "fix" nitrogen - convert ... have now shown that this bacterium has evolved into a new cellular structure, or organelle. It is the first known nitrogen-fixing organelle ...

“These algae potentially have an exceptionally flexible cell wall, which differs significantly in fine structure from those of other green algae. We demonstrated this using electron microscopy. During ...

Scientists who study a family of green algae that includes unicellular Chlamydomonas ... by definition every multicellular organism possesses multiple cells that remain associated following ...

"Everything more complicated than a bacterial cell owes its existence ... The nitrogen-fixing structure was found in Braarudosphaera bigelowii and its relatives, marine algae found throughout ...