natural immunity

常见例句

Humans have had no opportunity to develop a natural immunity.
人类无机会形成自然免疫力。
Bee glue scented soap:The bee glue both may take orally the natural immunity intensifier, and may the external use the most perfect natural broad spectrum antibiotics.
蜂胶香皂：蜂胶既可内服的天然免疫增强剂，又可外用的最完善的天然广谱抗生物质。
Therefore, it is proposed that natural immunity of the intestinal mucosa induced by Chinese medicine can effectively remove the repository, thereby reducing the plasma viral load.
因此提出应用中医药诱导肠黏膜天然免疫可能有助于清除病毒，从而降低血浆病毒负荷。

When people from non-endemic areas, who have little natural immunity, travel to endemic ones, they are especially vulnerable.
ECONOMIST: Malaria: Four horsemen of the Apocalypse? The
However, since natural immunity to malaria exists, researchers are reasonably optimistic that a vaccine, which stimulates this immunity artificially, should be feasible.
ECONOMIST: Malaria research gets a shot in the arm
In 1957, when flu swept through Hong Kong, Mr Hilleman identified the virus as a new form to which people had no natural immunity and passed on his findings to vaccine-makers.
ECONOMIST: Obituary