ingestion of a vaccine containing killed streptococcus mutans , originally isolated from each volunteer , daily for 10 consecutive days induced increased levels of specific secretory immunoglobulin a ( siga ) antibodies to s. mutans cells and two cell surface proteins , glucosyltransferase and surface antigen i/ii , in parotid saliva and tears of four healthy males and in parotid saliva , tears , colostrum , and milk of a pregnant woman .
C1327616
secretory
C0007634
cells