206 The Blood-Supply of Lymphatic Vessels in Man 
ing vessels exist and the supply is unilateral or bilateral. The conse- 
quent picture is merely an elaboration of that already described. Vessels 
| 
Fic. 12. Showing bilateral blood-supply of large collecting lacteal, near 
superior mesenteric trunks. X 50. 
with a unilateral supply have relatively large arteries and veins on their 
walls. Fig. 11 gives such an example. The capillary mesh is always 
