smallpox virus造句怎麼寫

The U.S. smallpox viruses, which include samples from Britain, Japan and the Netherlands, are stored in liquid nitrogen.

a poxvirus closely related to smallpox virus; causes benign gelatinous tumors in humans.

It belongs to a group of viruses that includes the smallpox virus (variola), the virus used in the smallpox vaccine (vaccinia), and the cowpox virus.

Thanks to its resemblance to the smallpox virus, researchers were able to use vaccinia as a vaccine for the disease, eventually leading to its eradication in the late 1970s.