Hygienic Laboratory, Bulletin 40. 
Plate IX. 
cM. 
I 0 0 yU/. 
Horizontal section of female mite, removed from an infected rat. sp. cy., large cyst containing 
many sporocysts with sporozoites — the cyst walls do not show distinctly— the nuclei of the 
sporozoites are strongly stained: sp.. sporont showing peripheral nuclei; sp. hi., large cyst 
containing sporoblasts; gang., ganglion or brain; vent. div.. ventricular diverticulum; dig. 
cell, digestive or liver cell; enib., embryo. Drawn with camera lucida. Stained with iron 
hematoxylin. 
