2. Heart Attack
A heart attack is the death of, or damage to, part of the heart muscle because the supply of blood to the heart muscle is severely reduced or stopped.
Healthline.com (OMS Preferred Provider)

3. What is Heart attack?
A heart attack is when low blood flow causes the heart to starve for oxygen. Heart muscle dies or becomes permanently damaged. Your doctor calls this a myocardial infarction.
MedHelp Q&A

4. Heart Attack : Search Results - healthfinder.gov - Your Source for Reliable Health Information
A heart attack occurs when blood flow to a section of heart muscle becomes blocked. A leading killer of both men and women in the United States, learn the symptoms and how acting fast can save your li... Details >
HealthFinder.gov

5. Information about Heart Attack
A heart attack (also called an acute myocardial infarction) happens when the arteries leading to the heart become blocked and the blood supply is slowed or stopped. When the heart muscle can’t get the oxygen and nutrients it needs...
www.hospitalcompare.hhs.gov

6. index_html
The Zebrafish Gene Collection (ZGC) is an NIH initiative that supports the production of cDNA libraries, clones and sequences to provide a complete set of full-length (open reading frame) sequences and cDNA clones of expressed genes for zebrafish....
zgc.nci.nih.gov

7. index_html
The Xenopus Gene Collection (XGC) is an NIH initiative that supports the production of cDNA libraries, clones and 5'/3' sequences to provide a set of full-length (open reading frame) sequences and cDNA clones of expressed genes for Xenopus laevis ...
xgc.nci.nih.gov

8. Index of /html
Index of /html
www.agsdus.org

9. Patient Information Sheets: Heart Attack
Some heart attacks are sudden and intense. But most start slowly, with mild pain or discomfort. This information sheet provides answers to the following questions:
www.heart.org

10. OHSU Health Information: Heart Attack
A heart attack, or myocardial infarction, occurs when one or more regions of the heart muscle experience a severe or prolonged lack of oxygen caused by blocked blood flow to the heart muscle.
www.ohsu.edu