Mary Roach quoteMary Roach [1959-0]
American Author 
Quote rank: 116
| Saliva has antibacterial properties. It also has things called nerve growth factor, skin growth factor, histatins which help with wound closure. So when you see an animal licking a wound or even a mom kissing a child's boo-boo, there's some, there's some good science behind why one might do this. |
Mom
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