Bull. U. S. B. F. 1912. 



Plate LXXVI. 



Fig. 50. — Section showing involvement of aortic wall. Tumor alveoli between elastic lamella' of media. X260. 



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f^. 



i 



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HiG. 51. — Section sliowiiig infiltnition of individual muscle fibre.s. Cells witliiu the sarcoleninia. X.SOij. 



