古文字学
发表于 2025-4-1 03:05:04
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CYN
发表于 2025-4-1 06:32:51
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gene-therapy
发表于 2025-4-1 11:57:24
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COMA
发表于 2025-4-1 16:51:42
Criteria of Effectiveness,isease. But how exactly do we want it to protect us from that disease, and how will we determine whether it has accomplished that? What criteria will we use to determine whether we have a successful vaccine or not? Four possible criteria have been considered:
经典
发表于 2025-4-1 20:01:17
Whom Do You Want for Volunteers?,ing HIV positive. You need a volunteer who is likely to expose himself or herself to the virus. If no subjects ever engaged in risky behaviors, then the vaccine would never be tested against the real virus, and you would never know whether it works or not. The research would be a pointless and expensive waste.