They came up with a process in which researchers engineer a tetracysteine sequence (Cys Cys Xaa Xaa Cys Cys) into a protein and expose cells to a small, biarsenical derivative of fluorescein called ...

Uniform protein labeling in intact tissues is a challenge. An approach that allows antibodies to seep within organs could label proteins in millions of cells. Sahana is a science journalist and an ...