Presence of Granules Resembling Elementary Bodies in Yolk Cells of Normal Eggs

Blood from a case of anemia associated with the presence in the red blood cells of unidentified siderophilic granules¹ was inoculated onto the chorio-allantoic membranes and into the yolk sac of developing chick embryos. Sections were prepared from the membranes and, in Giemsa-stained preparations, minute purplish blue granules were found in great numbers in the cytoplasm of the yolk cells.