while further studies are necessary to establish the practical value of agglutination in the diagnosis of human syphilis , we believe that with a suitable culture or cultures well marked agglutination of treponema pallidum in dilutions of 1:5 , or better 1:10 and higher , indicates pallida infection and may prove of value in the diagnosis of isolated cases , particularly in the later stages .
C0039128
syphilis
C0009450
infection