Dear cat friends and lovers , there are several types of injection methods , the most efficiant long injection method is the one discribed above , and it creates 5 different connected tension areas , I think this is linked to cell splitting  , sdee article about 5 different types of cell devisions https://www.biologydiscussion.com/plants/cell-division/cell-division-5-significant-methods-of-cell-division-plants/13752?fbclid=IwAR1M-9WlQCAxnY_GluPhxeW8lHOS7yaGvbjRKfbw3-QjQiMzxVdyWbwTMxw

I also think that these tention areas can affect the waste types of matter after cell devision , and also our taste sensors are devided to 5 diffirent types , see article https://www.ajinomoto.com/umami/why-is-umami-important-to-us?fbclid=IwAR2QGAiYvFgS3kniYF7iL1uPl527zZc4IPM3SlwQHseX2WNNTSi0CordS-8

taste is connected to these 5 different tension areas created by injection , which is the onely way to trigger a sense