Fig. 21.17 (a) Intraoperative situs of the carotid artery, BC tube in the forceps, (b) nanocellulose
graft implanted in the porcine carotid artery (7-0 monofilament prolene). Patency was subsequently
controlled by flow measurement. The small picture is showing the ultra fine network
structure of cellulose in the tube. The matrix did not contain cells and required no preclotting.
Reproduced with permission from Schumann et al. (2009). Copyright#2008 Springer Science þ
Business Media B.V