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: Do human umbilical cord-derived mesenchymal stem cells protect against experimental colitis via CD5 ( + ) B regulatory cells?
Answer: HUC-MSCs protected against experimental colitis by boosting the numbers of CD5(+) B cells and IL-10-producing CD5(+) Bregs, and correcting Treg/Th17/Th1 imbalances.

Answer: yes


Question: Question: Is cardiac autonomic neuropathy in patients with uraemia related to pre-diabetes?
Answer: The prevalence of CAN and impaired glucose tolerance is high in uraemic patients, but impaired glucose tolerance seems to play no significant role in the aetiology of CAN in uraemic patients.

Answer: no


Question: Question: Does autocrine VEGF/VEGFR1 signaling in a subpopulation of cells associate with aggressive osteosarcoma?
Answer: Aggressive osteosarcoma phenotypes are mediated by autocrine VEGF/VEGFR1 signaling and improved stratification measures and novel anti-angiogenic strategies may benefit this specific tumor type.

Answer:
yes