animals in control group developed obvious respiratory distress, and bronchoscopy showed severe tracheal stenosis. Therefore, the experiment was suspended, and all animals were humanely euthanized.

The trachea (in the stented areas) was excised and cut longitudinally for anatomical observation. The trachea at the lower edge of the stent was cut off and divided into two parts. One part was fixed in a formalin solution for histological examination and the other in a buffered glutaraldehyde solution for the scanning electron microscopic (SEM) study. Blood was collected by syringes through puncture on the forelimb vein for high-performance liquid chromatography (HPLC) analysis. The trachea (in the stented and adjacent unstented areas) and lung tissue from the right upper lobe were excised and submitted for HPLC analysis. The stents were taken out andThe Photos You Wish You Had Taken On Holiday

With the 2016 Travel Photographer of the Year awards accepting entries up until 1st October 2016, one can’t help envisage views of the almost endless horizon in Arizona, a colourful street in Mumbai or cascading waterfalls tumbling down to the bottom of a lush Vietnamese valley. The awards celebrate the best images from around the world taken by travellers and feature exotic landscapes, animals and people.

The competition runs annually and this year’s category themes vary from ‘Journeys & Adventures‘, to ‘Travel Shorts’ which is the category for HD Video taken on a stills camera. Through September 4th, images from previous years’ entries will feature at an exhibition in London at the University of Greenwich.

The images featured below are from the