T-cells into action with a vaccine is much harder than stimulating the production of antibodies, because of the complex cellular interactions that it takes to get them going.

ECONOMIST: AIDS vaccines on trial | The

Eventually, when the pores closed completely, the primitive cells would have had a sodium pump that could power their cellular reactions, enabling more complex life to form.

MSN: Theorists pumped about origin of life idea - Technology & science - Science - LiveScience | NBC News

When the enzyme complex stops functioning, cellular clutter builds up in ways that prevents basic tasks like cell division from getting done, sometimes causing the cell to kill itself.

FORBES: Magazine Article

Velcade targeted an obscure complex of enzymes, called the proteasome, which acts as a kind of cellular maid.

FORBES: Millennium's Short Road For Velcade Approval

On Tuesday, Cooper used his keynote address at the Embedded Systems Conference in Boston to run down a list of complaints against the wireless industry that ranged from closed carrier networks to inefficient cellular antenna systems to the design of smart phones like the iPhone, which he argues are overly complex.

FORBES: Magazine Article