A nation can meet all its need for blood if only 1% to 3% of its population donate.
一个国家若有1%至3%的人口献血,即可满足其对血液的所有需求。
2
The antibodies in question were found by screening blood serum from 1, 800 volunteers from these countries.
这些抗体因对以上国家的1800名志愿者进行血浆筛查而被发现。
3
WHO recommends that blood donation by at least 1% a country's population is generally sufficient to meet a country's basic requirements for safe blood.