(Yahoo!) -- Following the deadly blasts at the Boston Marathon, acts of heroism were shared on Twitter and the Web.
Some runners who crossed the finish line continued running to Massachusetts General Hospital to donate blood.
The fact that so many runners in the Boston marathon kept running after the marathon to the hospital to donate blood, touches my heart.
— olivia duran (@oliviacduran) April 15, 2013
Define Hero: "Boston Marathon runners who crossed the finish line and kept running to the hospital to donate blood." — Lelia Brooks (@leliamcnees18) April 15, 2013
Others on Twitter praised the first responders and marathon employees who tended to the injured.
Boston's 1st responders line up to help those injured.Take a look people - this is what a hero looks like. twitter.com/BosGuy/status/…
— BosGuy (@BosGuy) April 15, 2013
It's insanely inspiring seeing all the heroic acts of the emergency response teams, runners and locals in Boston today. — Alexander Barnes (@AlexUntoDawn) April 15, 2013
video of workers for the marathon are about as heroic as i can imagine #boston
— Occupy (@TomJoadsGhost) April 15, 2013
Blood donors came out in force following the explosions. According to the Red Cross, their donations helped enormously.
Thanks to generosity of volunteer blood donors there is currently enough blood on the shelves to meet demand. #BostonMarathon
— American Red Cross (@RedCross) April 15, 2013
For more on how to help those affected by the blasts, check out this list from Take Part.