Algae inside blood vessels could act as oxygen factories
An unconventional way to get O₂ to nerve cells might one day aid stroke patients
![tadpole](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2019/10/102319_ls_algae_feat.jpg?fit=1028%2C579&ssl=1)
Light-sensitive live algae (a type of cyanobacteria called Synechocystis) injected into a tadpole moves through its blood vessels, tinging them green.
S. Özugur, H. Straka