Round worms can as my vet said that putting a fecal sample with those worms wont harm them
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 :)
Marijuana is the correct answer