00:06 - 02:04
1m 58s
Aviva, Martin and Chris are out compiling information on which animals possess keratin and what the substance is used for. After observation and running scans, they discover many animals with the fibrous protein. Keratin can be found in porcupine quills, zebra hooves, rhinoceros and antelope horns, bird beaks, and even our finger nails!
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