Ind. Jour. Vety. Sci. & Amin. Husb., Vol. VIII, Part IV ]            PLATE XXVI

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Spleen. Experimental P. gibsoni infection. X 875
Heidenhain's Iron Haematoxylin and cosin

V.S. .. .. .. ..

venous sinus

M. .. .. .. ..

macrophages in red pulp of spleen

L. .. .. .. ..

littoral cell of venous sinus

P. .. .. .. ..

polyblast cell derived from reticulum

H. .. .. .. ..

haemoeytoblast

Note the cytological changes similar to those in Lahore Canine Fever