我們的身體是剎那、剎那一直在變化的，其變化之快速是無法想像的。一切都在變化當中，都是一群「能」在變化，變化的程度是剎那、剎那地從來沒停止過。剎那是我們人類能夠想像到的最短的時間，實際上剎那這個東西根本沒有，因為它永遠在變，在變化過程當中產生了生老病死。
菩提道次第廣論–道前基礎 (2) – 道次引導
日常法師 釋
Spalding et al found the average age of intestinal tissue to be about 11 years. After accounting for epithelial cells (which have short lifespans of only 5 days), they found the average age of non-epithelial intestinal tissue to be 15.9 years. Skeletal muscle tissue was found to have an average age of 15.1 years. In the brain, tissues appear to be much older. The average age of the cerebellum’s gray-matter was only 2.9 years younger than the person, and the average age of occipital-cortex gray matter was about 10 years younger than the person, but the age of occipital-cortex neurons was found to be the same as the age of the person.
So, even though we think of our bodies as being permanent structures, our tissues are continually being turned over, renewed in a balance between the constant death of old cells and the constant birth of new cells.
Spalding KL, Bhardwaj RD, Buchholz BA, Druid H, Frisen J.
(2005) Retrospective birth dating of cells in humans. Cell. 122:133-43.
Interesting! right?
Inder
Inder's Short Stories 