How zebrafish are leading to new discoveries in kidney function

I came across this neat video from Mayo Clinic researcher Dr. Michael Romero, a comparative physiologist interested in how the kidneys work. In this video he describes discoveries made in zebrafish that relate to human kidney function:

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I'm a major fan of kidneys — they're fascinating organs for discussion of both development and evolution.
The "pet food poison' has clearly entered the human food chain. Definitely through animal feed for chickens and pigs raised for human consumption, and quite likely through direct contamination of food additives - gluten and grain/vegetable protein additives