Shan Wang of Stanford has used a GMR chip smaller than a postage stamp to detect carcinoma-embryonic antigen (a sign of colon and rectal cancer) and human papilloma virus, the main cause of cervical cancer.
The first in the series, the Stamp Act of 1765, required that materials which were printed and used in the colonies, like magazines and newspapers, be produced on stamped paper and embossed with revenue stamp.
While less hyped than Apple 's multi-touch technology used on the iPhone and on its notebooks, HP is quietly putting its own stamp on the Microsoft software it builds its PCs around.