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The chimpanzee in the South African zoo loves to smoke cigarettes hiding from the notice of the zoo officials. The question is that how the zoo officials take care of his health and how they can teach him smoking is injurious to health. What happens if all the monkeys in the zoo learn to smoke cigarettes offered by the visitors?

An international team of surgeons succeeded in transplanting the trachea of Cladio Castio who suffered from tuberculosis. The remarkable thing in this operation is that the transplanted tracheole was developed from the stem cells. The patient belonging to Columbia was admitted into a Barcelona hospital, for her left lung along with the left tracheole was completely damaged due to tuberculosis.A team of surgeons from various countries took to the challenge. They obtained the stem cells from the bone marrow of her thigh bone and developed a trachea tissue which was used for the repair of her tracheole.The operation was successfully conducted and the patient recovered.

Trachea before operation

Trachea after operation