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keyword

functions of the immune system

Monthly search volume and cost-per-click data for "functions of the immune system" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=functions+of+the+immune+system&country=us" +--------------+------------------+ | volume | 4,400 | | cpc | $1.81 | | competition | 0.01 | | country | US | | updated | 2026-05-25 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
immune system 60,500 $2.93 20/20
system immune 60,500 $3.45 20/20
immunologic system 49,500 $2.56 20/20
immunology system 49,500 $2.56 20/20
immune system function 5,400 $7.82 20/20
function of the immune system 4,400 $1.81 20/20
immune system functions 4,400 $2.16 20/20
what is the immune system 3,600 $0.22 20/20
what is the function of the immune system 1,900 $0 20/20
what is the immune system function 1,900 $0 20/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/keyword?q=functions+of+the+immune+system&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt