The process of turning human brain into immortality in America

The donor's brain will undergo careful dissection and preservation at the world's largest brain bank in the United States.

Only fresh brains are used in medical research, so when a donor dies in the US, their brain must be present at Harvard Brain Center, the world's largest brain bank. , within 24 hours, according to New Scientist.(Photo: Ken Richardson).

The average time to transport the brain to the center at McLean Hospital, Massachusetts, USA is 17 hours.This speed is said to be extremely fast in terms of having to remove the intact brain from the body.(Photo: Ken Richardson).

When receiving the brain, the first technician Jorge Tejada and colleagues must do is put it on the scale table.After weighing, the brain is divided into two halves and immersed in sterile salt solution.(Photo: Ken Richardson).

A hemisphere is cut into slices from front to back with important structures removed by a scalpel.The slicer technician cut in between two teflon-coated aluminum plates and hardened them for a few seconds with dry ice and liquid nitrogen.(Photo: Ken Richardson).

Rapid cooling helps minimize tissue damage.After that, the technician kept the slices in the freezer until needed for research.(Photo: Reuters).

The remaining hemisphere was immersed in formalin for several weeks before passing it to a pathologist who dissected, examined and stored at room temperature.(Photo: Reuters).