ORIGIN OF BLOOD AND ENDOTHELIUM 



35 



<g- 





© 



/ 



y 







■^.^ 



m::. ^ 



^^^\?{ 



^(^ 



^ 



!.s^.- . © 





■■'•■*?. 



-mm^^^mm 





©' 



'^s* 



a 



C2S> 



©, 





S.^&t^-JO<KSl: 



29 



/. 



