Why is the origin of serum important?
为什么血清的原产地很重要？
The origin of serum (also sometimes referred to as the ‘source’) is the country where the unrefined blood was collected. This is not to be confused with the country where the serum was separated, filtered, or otherwise processed, which may differ. The certificate of origin documents from the serum supplier should clearly state the serum source and processing information.
血清的原产地（有时也称为“来源”）是采集未精制血液的国家。不要与血清分离、过滤或以其他方式处理的国家混淆，这两者可能并不相同。血清供应商的原产地证书应明确说明血清的来源和处理信息。