_:b57941278 . _:b57941279 "C0003261" . _:b57941281 . _:b57941280 . _:b57941278 . _:b57941278 _:b57941280 . _:b57941278 "0.89"^^ . _:b57941279 "T038" . _:b57941280 _:b57941281 . _:b57941278 . _:b57941278 _:b57941279 . _:b57941281 "serum antibody responses" .