Table Info

Characteristics	IIM	Adaptive immune memory
Organism	Plants, invertebrates, vertebrates	Higher vertebrates
Cells	Monocytes/macrophages, NK cells, granulocytes, ILC	T and B lymphocytes
Mechanism	Epigenetic reprogramming, cell metabolic change	Antigen-specific gene rearrangement
Lasting time	Weeks to months	Years
Specificity	No	Yes

Declarations

Author contributions

SUK contributed the conception, drafting, literature search and artwork of the study; MUK did the drafting, artwork and literature search. All authors contributed to manuscript revision, read and approved the submitted version.

Conflicts of interest

The authors declare that there are no conflicts of interest.

Ethical approval

Not applicable.

Consent to participate

Not applicable.

Consent to publication

Not applicable.

Availability of data and materials

Not applicable.

Funding

Not applicable.

Copyright

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