natural killer cell isolated white background hand drawn scientific microbiology vector illustration sketch style adaptive |
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| navigate by keyword : natural cell killer lymphocyte blood system immune vector types memory white antigen isolated plasma medicine immunity science cancer information adaptive human regulatory biology antibodies infographic anatomy activation helper hematopoietic leukocyte education lymphoblast progenitor inflammatory cellular response category structure sketch drawing hand drawn ink etch pencil background scientific microbiology style |
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| Natural killer cell isolated on white background. Hand drawn scientific microbiology vector illustration in sketch style. Adaptive immune system. |
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