Trachea would open an investigation of Macchiarini's work and publications. Several bioengineering approaches have been tested to repair and replace the trachea, indicating extraordinary difficulties in a successful graft due. A 2016 article cited the tremendous difficulties of tracheal revascularization as a major challenge to any form of tracheal replacement. The study also notes that on top of the revascularization issue, there is no evidence that using bone-marrow stem-cells on a de-cellularized native trachea or synthetic scaffold will induce airway tissue regeneration, and such a method remains hypothetical. Ligaments Trachea The trachea, colloquially called the windpipe, is a cartilaginous tube that
Name day names in the Czech Republic gained slightly more importance than the others. For example, the dates associated with names Josef (Joseph) and Karel (Charles) are commonly known even by people with different names. However, the popularity of these names has decreased in the last years (6836 Josefs were born in 1947, but only 638 in 2014). Danes have their own calendar for name days (Danish 'navnedag'), see . However, the custom of celebrating one's name day is practically unknown in Denmark, and few Danes know when their name day is. Finnish Name Days Finns celebrate their name days (Finnish "nimipäivä",