Detailed Instructions: 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.
Q: Question: Does inhibition of telomerase activity by dominant-negative hTERT retard the growth of breast cancer cells?
Answer: This study shows that telomerase inhibition by DN-hTERT can effectively inhibit the cell viability and tumorigenicity of MCF7 cells and is an attractive approach for breast cancer therapy.
A:
yes