parasits
Protists
a host
A pathogen is an organism or substance that invades the body and causes damage to cells or tissues, leading to illness or infection. Examples of pathogens include bacteria, viruses, fungi, and parasites.
No. It is a living organism that invades the body. Protons are charged particles that are found inside atoms. They are not at all related.
Passive Immunity is when the body receives antibodies from another organism.
A foreign occupation is when Another Country invades and takes over another county.
antigens
A virus is a non-living pathogen that invades body cells to replicate and cause infection.
It is Pathogenic
destruction of cells by viral reproduction .
That's called a parasite.
Prions are the proteins which invades organisms.. they are usually proteinaceous material devoid of nucleic acid but yet capable of producing diseases in humans and other animals..examples are scrapie, kuru, etc..