Figure 330. — Embryo spleen. Embryo incubated 12 clays 11 hours. 1,370X 



1, 2 Granuloblasts. 



3-6 Metagranuloblasts. 



7-10 Heterophil promyelocytes. 



11 Eosinophil metagranuloblast. 



12 Erythroblast. 



13, 14 Early polychromatic erytlirocytes. 



1.5-17 iViid-polychromatio erythrocytes. 



18-21 Late polychromatic erythrocytes. 



22 Mid-polychromatic erythrocyte in mitosis, prob- 

 ably early anaphase. 



Figures 23-27: Late -polychromatic erythrocytes in mitosis. 



23 Early prophase. 



24 Late prophase, nuclear membrane broken down. 

 25, 26 Late prophase, uncoiling of spireme thread. 



27 Late anaphase. 



28 Late embryo thromboblast or early embryo 

 thrombocyte. 



29 Medium embryo thrombocyte. 



30 Small embryo thrombocytes. 



31 Smudged cell. 



160 



