Embryos were fixed for 30 min at room temperature with 4% paraformaldehyde in MOPS buffer (0.1 M 3-(N-morpholino) propane sulfonic acid), adjusted to a pH value of 7.5, and washed in PBT two times.

A photograph of a giant, green-and-yellow tadpole longer than a human hand turned up in an X post on Feb. 12, 2025. At the time of this reporting, the post had received more than 296,000 views.

Detecting danger is key to the survival and success of all species. Animal nervous and immune systems cooperate to optimize danger detection. Preceding studies have highlighted the benefits of ...