<Tr> <Td> Order: </Td> <Td> Lactobacillales </Td> </Tr> <Tr> <Td> Family: </Td> <Td> Streptococcaceae </Td> </Tr> <Tr> <Td> Genus: </Td> <Td> Streptococcus </Td> </Tr> <Tr> <Td> Species: </Td> <Td> S. anginosus </Td> </Tr>

What is the antigen carried by most strains of streptococcus anginosus (milleri)