Abstract
In the present work, the authors examined the sera from the normal humans, from the mothers and their new born babies for the anti-complementary actions and the antisheep hemolysin.
No difference was found among the above sera examined in respect to the anti-complementary actions, therefore, a reasonable amount of complement could always be used in the titration of the hemolysin.
The hemolysin titres of the sera from the mothers were almost equal to those of the normal human sera.
The hemolysin wes found to be absent in 14 out of 95 sera from the mothers, whereas it was found to be present only in 3 out of 98 sera fromm the umbilical cords.
