Any gentle stress, when applied to a single spot repetitively can destroy living tissue.

All living tissue contains not only 'normal'; carbon but also a radioactive carbon ('radio-carbon'; or 'carbon-14';).

The process starts with muscle cells taken in a biopsy, which are printed into structures that fuse into small pieces of living tissue.

The cells form a living tissue that has a shelf life of about a week, but when frozen in liquid nitrogen, it can be stored for years.

Conversely, too little stress also affects living tissue.