<Tr> <Th> ICD - 10 </Th> <Td> T14. 0 </Td> </Tr> <Tr> <Th> ICD - 9 - CM </Th> <Td> 919.2 </Td> </Tr> <Tr> <Th> DiseasesDB </Th> <Td> 1777 </Td> </Tr> <Tr> <Th> MedlinePlus </Th> <Td> 003239 </Td> </Tr>

Where does the liquid in blisters come from