Answer:
I believe it is D. All of the above.
Explanation:
I'm kinda into science yet I have no explanation, so sorry ;-;
Oxygen-free radicals that are very proactive molecules with every cellular module/component
The answer is C. The endothelium on the inside of the artery.
Here are some discoveries:
1. Avastin (a drug) Smashed Records for Brain Cancer Treatment
2. Early Detection of Schizophrenia Could Be Close.
3. Concussion Could Be More Serious Than First Thought
4. An Atlas of the Brain Was Created
5. Parkinson's Disease Can Be Treated With Tango and Music
Hope it helps :)