Examples of rapid cell regeneration

Chandra Suresh's files contain a folder labeled "Rapid Cellular Regeneration".
(Genesis)

Zach records a videotape of Claire being seriously injured from an 80 foot fall...

...and Claire regenerates completely.
(Genesis)

Claire's hand heals after being mangled in a garbage disposal.
(Genesis)

Claire walks through fire...

...and doesn't get burned.
(Genesis)

Accident-prone Claire is tackled on a football field, snapping her neck.
(Don't Look Back)

In a violent struggle, Claire's head is impaled by a tree branch...

...but a medical examiner removed the branch from Claire's brain...

...returning her life even after a full autopsy.
(One Giant Leap)

Claire walks away from a car crash that nearly killed Brody...

...survives even the worst injuries...

...noticing foreign objects must be removed.
(Aftermath)

Claire heals burns on her hands after pulling a tray out of the oven.
(Better Halves)

Lyle doesn't think twice when stapling his sister's hand.
(Nothing to Hide)

Sylar forcefully tosses Claire across a locker room, but with no lasting effect.
(Homecoming)

Afterwards, Sylar pushes Peter off the roof of Union Wells...

...but Peter copies Claire's power and regenerates his wounds...

...leaving his fully healed face bloodied.
(Homecoming)

Claire's lacerated hand healed itself after a severe accident with glass.
(Six Months Ago)

Claire jumps off the platform at the gravel plant again, but she heals as she pushes her collarbone back in place.
(Godsend)

The Mozaic file contains information on epithelial cell regeneration.
(The Fix)

After falling from Charles Deveaux's rooftop, Peter mimics Claire's regeneration to heal his wounds.
(Distractions)

Claire demonstrates her abilities to her birth mother by slicing her arm with a butcher knife.
(Distractions)

Matt shoots Claire, trusting she will survive...

...and her family gathers around her, some believing she is gone...

...but Claire revives later.
(Company Man)

Mrs. Bennet learns of her daughter's powers after Ted burns Claire's neck.
(Company Man)

When Claire tries to sedate Ted...

...the radiation seems almost unbearable...

...leaving her body severely burned (but her hair unharmed)...

...but the charred skin regenerates...

...until she is completely healed.
(Company Man)

Mr. Bennet calls his daughter a "human skeleton".
(Company Man)

Peter heals the cut Sylar made in his forehead.
(.07%)

Then, Sylar jams a large shard of glass into the back of Peter's head...

...which temporarily kills Peter...

...until Claire removes the foreign object from his brain...

...and he revives.
(.07%)

Claire jumps out a window to escape Angela and Nathan, plummeting to the ground...

...and runs off after regenerating.
(How to Stop an Exploding Man)

Mohinder lectures on regeneration.
(Four Months Later...)

At CVHS, Claire holds her hand over a Bunsen burner.
(Four Months Later...)

Claire breaks her shinbone after trying to do a backflip...

...but even the bruise heals quickly.
(Four Months Later...)

Adam walks away after he pushes Kaito off of Charles Deveaux's rooftop.
(Four Months Later...)

Caitlin helps Peter rediscover his power to heal.
(Lizards)

Claire reaches into a pot of boiling water, leaving no lasting burns.
(Lizards)

Claire later tests the limits of her regenerative powers...

...she finds that when her toe is cut off...

...it will still grow back.
(Lizards)

Despite a brigand's arrows...

...Kensei's wounds heal quickly.
(Kindred)

Shocked at his newly discovered ability, Kensei tests his power.
(Kindred)

Peter has a tattoo on his right arm...

...but due to rapid cell regeneration, it disappears almost instantly.
(Kindred)

Peter is shot in the chest, but his body rejects the bullet.
(Kindred)

Whitebeard's guard runs Takezo Kensei through a sword, but the effect is short-lived.
(The Line)

Claire walks away from a nasty spill.
(The Line)

Adam Monroe was able to instantly heal an electrical burn.
(Out of Time)

Peter looks at a picture of himself and Nathan...

...and heals his brain cells, regaining his stolen memories.
(Four Months Ago...)

Adam takes some of his own blood...

...to put in Nathan's IV...

...healing him almost immediately.
(Four Months Ago...)

Claire regenerates after she falls to the ground.
(Cautionary Tales)

Noah Bennet regenerates an eye, after he is transfused with Claire's blood...

...and wakes up after healing completely.
(Cautionary Tales)

Victoria shoots Peter, but Peter survives.
(Truth & Consequences)

Adam recovers from a shotgun blast to the gut.
(Truth & Consequences)

Claire's hand spits out shards of glass.
(Truth & Consequences)

During his long battle against Evan and his many clones in 1777, Adam repeatedly heals from various wounds.
(Revolutionary War, Parts 1, 2)

After being injected with an altered form of Claire's blood...

...Maya heals from a gun wound...

...and wakes up perfectly healthy.
(Powerless)

Sylar injects himself with Claire's blood...

...and his injuries from his encounter with Elle instantly heal.
(Powerless)

Buried alive in a coffin, Adam has "died more times than [he] can count" due to lack of oxygen.
(The Ten Brides of Takezo Kensei)

Adam cures Diane of her tuberculosis by giving her his blood.
(The Ten Brides of Takezo Kensei)