116 



III [hv |)t-ri|)li('rv ol' llic ifrowlh more clongalcd fusiform 

 I'flls arc ofli'M round. This is |)i-ol)al)ly due lo (lie fad thai 

 llu' colls liavc reached Ihc Ixirder of Ihe clot covered wilh 

 lissue juice and IliereloiH' einlicd Iheniselves in llu- clol 

 ;ind heconu' spindlc-sliapcd lor lliat reason. 



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W 



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% 



fr 



h 



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w'- ■^ 



M •/ 



4 



% 



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MM- 



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v«.i*iu.*Kj:.^ 



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 tit 



31 .^'^ 



Fig. 14. 



Stained culture of epithelial cells, 6 weeks old. 1,100. 



From The Journ. of Exp. Med. 1922, XXXV, 367. 



.\s luenlioned before, T li 1 e u li u I h *■'''') ol)servcd thai 

 c]ian<4es in llu' coiisislency of Ihe culture medium had a 

 luarked influence on the cell shape. In soft medium (oblained 

 by diluliuf.^ willi muscle exlr.acl) (he ])olygonal cells changed 

 Iheir form into a fusifoiMu; and in a hai'd medium obtained 



