Given a passage with a question and an answer to that question, classify if the answer actually answers the question into 'yes' or 'no'. Output 'yes' if the answer answers the question and output 'no' if the answer does not answer the question.
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Question: Question: Does human Amnion-Derived Mesenchymal Stem Cell Transplantation ameliorate Liver Fibrosis in Rats?
Answer: Transplantation of hAMSCs provided significant improvement in a rat model of liver fibrosis, possibly through the inhibition of Kupffer cell and hepatic stellate cell activation. hAMSCs may be a potential new treatment for liver fibrosis.

Answer: yes


Question: Question: Are arterial stiffness and central arterial wave reflection associated with serum uric acid , total bilirubin , and neutrophil-to-lymphocyte ratio in patients with coronary artery disease?
Answer: N/L ratio and serum UA and TB levels might be used to risk-stratify patients with respect to arterial stiffness in CAD patients, especially in the presence of ACS.

Answer: yes


Question: Question: Do aversive stimuli drive drug seeking in a state of low dopamine tone?
Answer: These data demonstrate that stress-induced drug seeking can occur in a terminal environment of low dopamine tone that is dependent on a CRF-induced decrease in midbrain dopamine activity.

Answer:
yes