Ding Xiaobang said that this model combines chondrocytes with biodegradable biomaterials to regenerate cartilage tissue that looks like a human ear, "of course it is not a real human ear". He also said that although the scaffold was completely degradable at that time, "it would take eight weeks to degrade anyway", and the time was tight and the cells on the scaffold were not active, so it was hastily implanted into the back of nude mice. Because chondrocytes can't wrap the material scaffold, it causes serious reaction in mice.
In response to Shang Qingxin's query, Ding Xiaobang said that aspiration of exudate is a necessary step in plastic surgery. In reality, people's costal cartilage is used to carve the outline of the ear, and then buried under the skin for ear plastic surgery. "A negative pressure aspirator must be used to ensure that the skin adheres to the costal cartilage in order to grow into an ear shape. This is the most basic technology in clinic. "
He thinks it is nonsense to say that nude mice were secretly executed. Nude mice themselves have no immunity, and they only lived for more than 4 weeks from the establishment of the model to the death of infection. Previous reports may misunderstand "model" as "sample". Teacher Cao's paper published in the most famous plastic surgery magazine Plastic and Reconstruction Surgery uses the word model, which is the model. I'm afraid it's deliberate to think that someone spread this information during Mr. Cao's election as an academician.