A vaccine is a preparation of one or more microbial antigens to induce protective immunity in potential hosts.
Vaccines are the anti-microbial agents administered to provide immunity against specific diseases. There can be a wide variety of vaccines, like: live attenuated vaccine, vaccine with killed or inactivated microbes, vaccine containing the sub-parts of the microbes, etc.
Immunity is the body's ability fight against a disease. The immunity is build when a body gets attacked by pathogen. Various immune cells like neutrophils, MHCs, dendritic cells, B and T cells, etc. are involved in building and strengthening the immunity of any person.
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<span>Electrical signals in the body are often based on ions because ions are charged particles</span>
Answer:
When animals immigrate into another breeding population they may bring with then alleles that are rare or unknown in the population they breed into.
Explanation:
Gene flow is the movement of genes from one population to another population. Examples of this include a bee carrying pollen from one flower population to another, or a caribou from one herd mating with members of another herd. Genes can come in different forms called alleles.
Also, I didn't see the list of choices.
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