New research demonstrates that green algae not only grow inside of a spotted salamander egg, but enter cells within its body. Thus far, this is the only example of endosymbiosis in a vertebrate. (See ...

Spotted salamander, Ambystoma maculatum, eggs with developing embryos. The algae in the yolk sacs is visible to the ... Not only did the algae live on the surface of developing salamander embryos, but ...