Microscopic Cities: Life and Death in Cells

Your body is running a billion microscopic cities right now and the machinery is absolutely insane.

We literally stole glowing proteins from jellyfish just to watch how this works under a microscope.

Inside every single cell, there are actual highways made of skeletons where

motor proteins walk around carrying cargo like tiny mailmen. It is all controlled

by strict VIP lists, meaning if a protein does not have the right ID badge, it cannot get into

the nucleus. But the craziest part is the kill switch. If a cell gets too

stressed or breaks its own rules, it triggers a self-destruct sequence called apoptosis to save

the rest of you. You are only alive because your cells know exactly when to die.