When in contact with thrombin, the DNA deactivates the enzyme, and this allows blood to flow freely.
The biological activity of heparin depends on the presence of antithrombin III, a substance in blood plasma that binds and deactivates serum clotting factors.
When present as a substituent on an aromatic ring, a halogen deactivates the ring toward electrophilic aromatic substitution (i.e., makes it less reactive than benzene) and directs incoming substituents to positions ortho and para to itself.
She seizes it and, mission complete, deactivates to nothing but a flashing green light.
Then let Google know the people you want to be notified when the company deactivates the account; you're allowed up to 10 names.
He suggested that the losses was more likely due to Twitter, which routinely deactivates accounts it deems fake.
Twitter eventually deactivates abandoned accounts after a certain period of inactivity, but you may have to wait for six months or so.
Under normal circumstances, the drugs are metabolized in the gastrointestinal tract, and relatively little is absorbed, because an enzyme in the gut called CYP3A4 deactivates them.
This kind of system — already used in BMWs, Chryslers, Volkswagens and some of the newest Toyotas — deactivates the car's accelerator when the brake pedal is pressed so that the car can stop safely even if its throttle sticks open.
(If you received no confirmation message and someone is trying to use your address to set up a Facebook account, that account will only be active for a short time because Facebook deactivates unconfirmed accounts after three days).
"When a magnet is placed on a defibrillator, it temporarily deactivates the device," said Maisel.
