virus concept t-cell dendritic cell antigen presenting cells cancer cells, virus with receptors, virology concept viral infection

abstract animal antigen background bacteria biology biomedical biotechnology bone cancer cell cells chimeric colorful concept cytotoxic dendritic disease epidemic flu germs health illness illustration immune immunity immunology infection isolated killer lymphocyte macro marrow medicine microbe microbiology oncology organism outbreak presentation presenting receptor receptors rendering science therapy viral virology virus viruses