<Tr> <Th_colspan="2"> Details </Th> </Tr> <Tr> <Th_colspan="2"> Identifiers </Th> </Tr> <Tr> <Th> Latin </Th> <Td> chorion </Td> </Tr> <Tr> <Th> MeSH </Th> <Td> D002823 </Td> </Tr>

What does the chorion do in an egg